Home / 129,651,513.52-178,923,349.20-70,914,176.68

Finding the Fourth Proportional to 129,651,513.52, 178,923,349.20 and 70,914,176.68

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Solution

The fourth proportional to 129,651,513.52, 178,923,349.20 and 70,914,176.68 is: 97,863,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,651,513.52 : 178,923,349.20 = 70,914,176.68 : x
  2. Step 2: Convert to fraction form
    129,651,513.52/178,923,349.20 = 70,914,176.68/x
  3. Step 3: Cross multiply
    129,651,513.52x = 178,923,349.20 × 70,914,176.68
  4. Step 4: Simplify right side
    129,651,513.52x = 12,688,201,997,346,138
  5. Step 5: Solve for x
    x = 12,688,201,997,346,138/129,651,513.52
  6. Step 6: Final answer
    x = 97,863,894.16

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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.