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Finding the Fourth Proportional to 152,726.80, 210,872.28 and 101,859.64

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Solution

The fourth proportional to 152,726.80, 210,872.28 and 101,859.64 is: 140,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,726.80 : 210,872.28 = 101,859.64 : x
  2. Step 2: Convert to fraction form
    152,726.80/210,872.28 = 101,859.64/x
  3. Step 3: Cross multiply
    152,726.80x = 210,872.28 × 101,859.64
  4. Step 4: Simplify right side
    152,726.80x = 21,479,374,526.78
  5. Step 5: Solve for x
    x = 21,479,374,526.78/152,726.80
  6. Step 6: Final answer
    x = 140,639.20

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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.