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Finding the Fourth Proportional to 138,574.80, 207,883.98 and 45,058.68

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Solution

The fourth proportional to 138,574.80, 207,883.98 and 45,058.68 is: 67,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,574.80 : 207,883.98 = 45,058.68 : x
  2. Step 2: Convert to fraction form
    138,574.80/207,883.98 = 45,058.68/x
  3. Step 3: Cross multiply
    138,574.80x = 207,883.98 × 45,058.68
  4. Step 4: Simplify right side
    138,574.80x = 9,366,977,731.95
  5. Step 5: Solve for x
    x = 9,366,977,731.95/138,574.80
  6. Step 6: Final answer
    x = 67,595.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.