Home / 129,566.01-178,798.66-72,204.07

Finding the Fourth Proportional to 129,566.01, 178,798.66 and 72,204.07

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Solution

The fourth proportional to 129,566.01, 178,798.66 and 72,204.07 is: 99,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,566.01 : 178,798.66 = 72,204.07 : x
  2. Step 2: Convert to fraction form
    129,566.01/178,798.66 = 72,204.07/x
  3. Step 3: Cross multiply
    129,566.01x = 178,798.66 × 72,204.07
  4. Step 4: Simplify right side
    129,566.01x = 12,909,990,962.55
  5. Step 5: Solve for x
    x = 12,909,990,962.55/129,566.01
  6. Step 6: Final answer
    x = 99,640.26

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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.