Home / 129,475.18-178,676.04-72,114.04

Finding the Fourth Proportional to 129,475.18, 178,676.04 and 72,114.04

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Solution

The fourth proportional to 129,475.18, 178,676.04 and 72,114.04 is: 99,517.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,475.18 : 178,676.04 = 72,114.04 : x
  2. Step 2: Convert to fraction form
    129,475.18/178,676.04 = 72,114.04/x
  3. Step 3: Cross multiply
    129,475.18x = 178,676.04 × 72,114.04
  4. Step 4: Simplify right side
    129,475.18x = 12,885,051,095.60
  5. Step 5: Solve for x
    x = 12,885,051,095.60/129,475.18
  6. Step 6: Final answer
    x = 99,517.54

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1.5x scale

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.