Home / 129,073.02-178,114.50-71,715.96

Finding the Fourth Proportional to 129,073.02, 178,114.50 and 71,715.96

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Solution

The fourth proportional to 129,073.02, 178,114.50 and 71,715.96 is: 98,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,073.02 : 178,114.50 = 71,715.96 : x
  2. Step 2: Convert to fraction form
    129,073.02/178,114.50 = 71,715.96/x
  3. Step 3: Cross multiply
    129,073.02x = 178,114.50 × 71,715.96
  4. Step 4: Simplify right side
    129,073.02x = 12,773,652,357.42
  5. Step 5: Solve for x
    x = 12,773,652,357.42/129,073.02
  6. Step 6: Final answer
    x = 98,964.54

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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.