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Finding the Fourth Proportional to 98,545.47, 147,278.18 and 71,947.47

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Solution

The fourth proportional to 98,545.47, 147,278.18 and 71,947.47 is: 107,526.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,545.47 : 147,278.18 = 71,947.47 : x
  2. Step 2: Convert to fraction form
    98,545.47/147,278.18 = 71,947.47/x
  3. Step 3: Cross multiply
    98,545.47x = 147,278.18 × 71,947.47
  4. Step 4: Simplify right side
    98,545.47x = 10,596,292,077.47
  5. Step 5: Solve for x
    x = 10,596,292,077.47/98,545.47
  6. Step 6: Final answer
    x = 107,526.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.