Home / 156,813,279.53-216,402,505.16-87,197,165.73

Finding the Fourth Proportional to 156,813,279.53, 216,402,505.16 and 87,197,165.73

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Solution

The fourth proportional to 156,813,279.53, 216,402,505.16 and 87,197,165.73 is: 120,332,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,813,279.53 : 216,402,505.16 = 87,197,165.73 : x
  2. Step 2: Convert to fraction form
    156,813,279.53/216,402,505.16 = 87,197,165.73/x
  3. Step 3: Cross multiply
    156,813,279.53x = 216,402,505.16 × 87,197,165.73
  4. Step 4: Simplify right side
    156,813,279.53x = 18,869,685,106,387,716
  5. Step 5: Solve for x
    x = 18,869,685,106,387,716/156,813,279.53
  6. Step 6: Final answer
    x = 120,332,188.47

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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.