Home / 121,493,336,391.28-167,660,745,905.28-72,664,156,015.72

Finding the Fourth Proportional to 121,493,336,391.28, 167,660,745,905.28 and 72,664,156,015.72

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Solution

The fourth proportional to 121,493,336,391.28, 167,660,745,905.28 and 72,664,156,015.72 is: 100,276,500,424.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,493,336,391.28 : 167,660,745,905.28 = 72,664,156,015.72 : x
  2. Step 2: Convert to fraction form
    121,493,336,391.28/167,660,745,905.28 = 72,664,156,015.72/x
  3. Step 3: Cross multiply
    121,493,336,391.28x = 167,660,745,905.28 × 72,664,156,015.72
  4. Step 4: Simplify right side
    121,493,336,391.28x = 12,182,926,598,173,253,173,248
  5. Step 5: Solve for x
    x = 12,182,926,598,173,253,173,248/121,493,336,391.28
  6. Step 6: Final answer
    x = 100,276,500,424.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.