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Finding the Fourth Proportional to 101,686.64, 152,439.24 and 51,738.80

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Solution

The fourth proportional to 101,686.64, 152,439.24 and 51,738.80 is: 77,562.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,686.64 : 152,439.24 = 51,738.80 : x
  2. Step 2: Convert to fraction form
    101,686.64/152,439.24 = 51,738.80/x
  3. Step 3: Cross multiply
    101,686.64x = 152,439.24 × 51,738.80
  4. Step 4: Simplify right side
    101,686.64x = 7,887,023,350.51
  5. Step 5: Solve for x
    x = 7,887,023,350.51/101,686.64
  6. Step 6: Final answer
    x = 77,562.04

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1.5x scale

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.