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Finding the Fourth Proportional to 115,041.51, 158,732.78 and 67,285.53

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Solution

The fourth proportional to 115,041.51, 158,732.78 and 67,285.53 is: 92,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,041.51 : 158,732.78 = 67,285.53 : x
  2. Step 2: Convert to fraction form
    115,041.51/158,732.78 = 67,285.53/x
  3. Step 3: Cross multiply
    115,041.51x = 158,732.78 × 67,285.53
  4. Step 4: Simplify right side
    115,041.51x = 10,680,418,894.25
  5. Step 5: Solve for x
    x = 10,680,418,894.25/115,041.51
  6. Step 6: Final answer
    x = 92,839.70

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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.