Home / 129,727,133.28-179,023,460.40-70,989,811.20

Finding the Fourth Proportional to 129,727,133.28, 179,023,460.40 and 70,989,811.20

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Solution

The fourth proportional to 129,727,133.28, 179,023,460.40 and 70,989,811.20 is: 97,965,948.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,727,133.28 : 179,023,460.40 = 70,989,811.20 : x
  2. Step 2: Convert to fraction form
    129,727,133.28/179,023,460.40 = 70,989,811.20/x
  3. Step 3: Cross multiply
    129,727,133.28x = 179,023,460.40 × 70,989,811.20
  4. Step 4: Simplify right side
    129,727,133.28x = 12,708,841,654,166,678
  5. Step 5: Solve for x
    x = 12,708,841,654,166,678/129,727,133.28
  6. Step 6: Final answer
    x = 97,965,948.47

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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.