Home / 113,135.31-156,138.98-72,336.42

Finding the Fourth Proportional to 113,135.31, 156,138.98 and 72,336.42

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Solution

The fourth proportional to 113,135.31, 156,138.98 and 72,336.42 is: 99,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,135.31 : 156,138.98 = 72,336.42 : x
  2. Step 2: Convert to fraction form
    113,135.31/156,138.98 = 72,336.42/x
  3. Step 3: Cross multiply
    113,135.31x = 156,138.98 × 72,336.42
  4. Step 4: Simplify right side
    113,135.31x = 11,294,534,473.97
  5. Step 5: Solve for x
    x = 11,294,534,473.97/113,135.31
  6. Step 6: Final answer
    x = 99,832.09

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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.