Home / 80,967,643.60-121,451,465.40-73,157,429.20

Finding the Fourth Proportional to 80,967,643.60, 121,451,465.40 and 73,157,429.20

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Solution

The fourth proportional to 80,967,643.60, 121,451,465.40 and 73,157,429.20 is: 109,736,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,967,643.60 : 121,451,465.40 = 73,157,429.20 : x
  2. Step 2: Convert to fraction form
    80,967,643.60/121,451,465.40 = 73,157,429.20/x
  3. Step 3: Cross multiply
    80,967,643.60x = 121,451,465.40 × 73,157,429.20
  4. Step 4: Simplify right side
    80,967,643.60x = 8,885,076,981,236,750
  5. Step 5: Solve for x
    x = 8,885,076,981,236,750/80,967,643.60
  6. Step 6: Final answer
    x = 109,736,143.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.