Home / 137,581.07-189,781.43-86,512.95

Finding the Fourth Proportional to 137,581.07, 189,781.43 and 86,512.95

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Solution

The fourth proportional to 137,581.07, 189,781.43 and 86,512.95 is: 119,337.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,581.07 : 189,781.43 = 86,512.95 : x
  2. Step 2: Convert to fraction form
    137,581.07/189,781.43 = 86,512.95/x
  3. Step 3: Cross multiply
    137,581.07x = 189,781.43 × 86,512.95
  4. Step 4: Simplify right side
    137,581.07x = 16,418,550,931.95
  5. Step 5: Solve for x
    x = 16,418,550,931.95/137,581.07
  6. Step 6: Final answer
    x = 119,337.29

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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.