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Finding the Fourth Proportional to 140,502.26, 210,787.95 and 99,030.26

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Solution

The fourth proportional to 140,502.26, 210,787.95 and 99,030.26 is: 148,569.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,502.26 : 210,787.95 = 99,030.26 : x
  2. Step 2: Convert to fraction form
    140,502.26/210,787.95 = 99,030.26/x
  3. Step 3: Cross multiply
    140,502.26x = 210,787.95 × 99,030.26
  4. Step 4: Simplify right side
    140,502.26x = 20,874,385,493.37
  5. Step 5: Solve for x
    x = 20,874,385,493.37/140,502.26
  6. Step 6: Final answer
    x = 148,569.75

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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.