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Finding the Fourth Proportional to 173,787.70, 260,681.55 and 99,138.10

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Solution

The fourth proportional to 173,787.70, 260,681.55 and 99,138.10 is: 148,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,787.70 : 260,681.55 = 99,138.10 : x
  2. Step 2: Convert to fraction form
    173,787.70/260,681.55 = 99,138.10/x
  3. Step 3: Cross multiply
    173,787.70x = 260,681.55 × 99,138.10
  4. Step 4: Simplify right side
    173,787.70x = 25,843,473,572.06
  5. Step 5: Solve for x
    x = 25,843,473,572.06/173,787.70
  6. Step 6: Final answer
    x = 148,707.15

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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.