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Finding the Fourth Proportional to 105,563.39, 145,679.84 and 60,240.47

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Solution

The fourth proportional to 105,563.39, 145,679.84 and 60,240.47 is: 83,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,563.39 : 145,679.84 = 60,240.47 : x
  2. Step 2: Convert to fraction form
    105,563.39/145,679.84 = 60,240.47/x
  3. Step 3: Cross multiply
    105,563.39x = 145,679.84 × 60,240.47
  4. Step 4: Simplify right side
    105,563.39x = 8,775,822,545.93
  5. Step 5: Solve for x
    x = 8,775,822,545.93/105,563.39
  6. Step 6: Final answer
    x = 83,133.20

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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.