Home / 129,525.01-178,697.10-78,500.94

Finding the Fourth Proportional to 129,525.01, 178,697.10 and 78,500.94

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Solution

The fourth proportional to 129,525.01, 178,697.10 and 78,500.94 is: 108,302.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,525.01 : 178,697.10 = 78,500.94 : x
  2. Step 2: Convert to fraction form
    129,525.01/178,697.10 = 78,500.94/x
  3. Step 3: Cross multiply
    129,525.01x = 178,697.10 × 78,500.94
  4. Step 4: Simplify right side
    129,525.01x = 14,027,890,325.27
  5. Step 5: Solve for x
    x = 14,027,890,325.27/129,525.01
  6. Step 6: Final answer
    x = 108,302.56

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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.