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Finding the Fourth Proportional to 152,490.04, 210,436.28 and 85,422.04

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Solution

The fourth proportional to 152,490.04, 210,436.28 and 85,422.04 is: 117,882.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,490.04 : 210,436.28 = 85,422.04 : x
  2. Step 2: Convert to fraction form
    152,490.04/210,436.28 = 85,422.04/x
  3. Step 3: Cross multiply
    152,490.04x = 210,436.28 × 85,422.04
  4. Step 4: Simplify right side
    152,490.04x = 17,975,896,327.61
  5. Step 5: Solve for x
    x = 17,975,896,327.61/152,490.04
  6. Step 6: Final answer
    x = 117,882.43

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1.5x scale

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.