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Finding the Fourth Proportional to 107,418, 148,121.34 and 67,117.08

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Solution

The fourth proportional to 107,418, 148,121.34 and 67,117.08 is: 92,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,418 : 148,121.34 = 67,117.08 : x
  2. Step 2: Convert to fraction form
    107,418/148,121.34 = 67,117.08/x
  3. Step 3: Cross multiply
    107,418x = 148,121.34 × 67,117.08
  4. Step 4: Simplify right side
    107,418x = 9,941,471,826.49
  5. Step 5: Solve for x
    x = 9,941,471,826.49/107,418
  6. Step 6: Final answer
    x = 92,549.40

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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.