Home / 129,582.22-178,829.46-72,225.30

Finding the Fourth Proportional to 129,582.22, 178,829.46 and 72,225.30

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Solution

The fourth proportional to 129,582.22, 178,829.46 and 72,225.30 is: 99,674.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,582.22 : 178,829.46 = 72,225.30 : x
  2. Step 2: Convert to fraction form
    129,582.22/178,829.46 = 72,225.30/x
  3. Step 3: Cross multiply
    129,582.22x = 178,829.46 × 72,225.30
  4. Step 4: Simplify right side
    129,582.22x = 12,916,011,397.34
  5. Step 5: Solve for x
    x = 12,916,011,397.34/129,582.22
  6. Step 6: Final answer
    x = 99,674.26

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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.