Home / 113,125.50-156,126.96-65,379.24

Finding the Fourth Proportional to 113,125.50, 156,126.96 and 65,379.24

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Solution

The fourth proportional to 113,125.50, 156,126.96 and 65,379.24 is: 90,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,125.50 : 156,126.96 = 65,379.24 : x
  2. Step 2: Convert to fraction form
    113,125.50/156,126.96 = 65,379.24/x
  3. Step 3: Cross multiply
    113,125.50x = 156,126.96 × 65,379.24
  4. Step 4: Simplify right side
    113,125.50x = 10,207,461,988.31
  5. Step 5: Solve for x
    x = 10,207,461,988.31/113,125.50
  6. Step 6: Final answer
    x = 90,231.31

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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.