Home / 113,120.85-156,108.06-62,134.78

Finding the Fourth Proportional to 113,120.85, 156,108.06 and 62,134.78

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Solution

The fourth proportional to 113,120.85, 156,108.06 and 62,134.78 is: 85,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,120.85 : 156,108.06 = 62,134.78 : x
  2. Step 2: Convert to fraction form
    113,120.85/156,108.06 = 62,134.78/x
  3. Step 3: Cross multiply
    113,120.85x = 156,108.06 × 62,134.78
  4. Step 4: Simplify right side
    113,120.85x = 9,699,739,866.76
  5. Step 5: Solve for x
    x = 9,699,739,866.76/113,120.85
  6. Step 6: Final answer
    x = 85,746.70

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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.