Home / 113,291.52-156,364.93-86,385.95

Finding the Fourth Proportional to 113,291.52, 156,364.93 and 86,385.95

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Solution

The fourth proportional to 113,291.52, 156,364.93 and 86,385.95 is: 119,229.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,291.52 : 156,364.93 = 86,385.95 : x
  2. Step 2: Convert to fraction form
    113,291.52/156,364.93 = 86,385.95/x
  3. Step 3: Cross multiply
    113,291.52x = 156,364.93 × 86,385.95
  4. Step 4: Simplify right side
    113,291.52x = 13,507,733,024.73
  5. Step 5: Solve for x
    x = 13,507,733,024.73/113,291.52
  6. Step 6: Final answer
    x = 119,229.87

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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.