Home / 129,513.15-178,727.99-72,924.93

Finding the Fourth Proportional to 129,513.15, 178,727.99 and 72,924.93

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Solution

The fourth proportional to 129,513.15, 178,727.99 and 72,924.93 is: 100,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,513.15 : 178,727.99 = 72,924.93 : x
  2. Step 2: Convert to fraction form
    129,513.15/178,727.99 = 72,924.93/x
  3. Step 3: Cross multiply
    129,513.15x = 178,727.99 × 72,924.93
  4. Step 4: Simplify right side
    129,513.15x = 13,033,725,795.17
  5. Step 5: Solve for x
    x = 13,033,725,795.17/129,513.15
  6. Step 6: Final answer
    x = 100,636.31

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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.