Home / 156,126.70-215,397.21-102,441.52

Finding the Fourth Proportional to 156,126.70, 215,397.21 and 102,441.52

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Solution

The fourth proportional to 156,126.70, 215,397.21 and 102,441.52 is: 141,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,126.70 : 215,397.21 = 102,441.52 : x
  2. Step 2: Convert to fraction form
    156,126.70/215,397.21 = 102,441.52/x
  3. Step 3: Cross multiply
    156,126.70x = 215,397.21 × 102,441.52
  4. Step 4: Simplify right side
    156,126.70x = 22,065,617,596.16
  5. Step 5: Solve for x
    x = 22,065,617,596.16/156,126.70
  6. Step 6: Final answer
    x = 141,331.48

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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.