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Finding the Fourth Proportional to 225,000.87, 310,510.85 and 123,020.25

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Solution

The fourth proportional to 225,000.87, 310,510.85 and 123,020.25 is: 169,773.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,000.87 : 310,510.85 = 123,020.25 : x
  2. Step 2: Convert to fraction form
    225,000.87/310,510.85 = 123,020.25/x
  3. Step 3: Cross multiply
    225,000.87x = 310,510.85 × 123,020.25
  4. Step 4: Simplify right side
    225,000.87x = 38,199,121,779.61
  5. Step 5: Solve for x
    x = 38,199,121,779.61/225,000.87
  6. Step 6: Final answer
    x = 169,773.22

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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.