Home / 120,385.24-166,087.02-77,967.16

Finding the Fourth Proportional to 120,385.24, 166,087.02 and 77,967.16

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Solution

The fourth proportional to 120,385.24, 166,087.02 and 77,967.16 is: 107,565.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,385.24 : 166,087.02 = 77,967.16 : x
  2. Step 2: Convert to fraction form
    120,385.24/166,087.02 = 77,967.16/x
  3. Step 3: Cross multiply
    120,385.24x = 166,087.02 × 77,967.16
  4. Step 4: Simplify right side
    120,385.24x = 12,949,333,262.26
  5. Step 5: Solve for x
    x = 12,949,333,262.26/120,385.24
  6. Step 6: Final answer
    x = 107,565.79

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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.