Home / 120,565.24-166,353.10-72,159.64

Finding the Fourth Proportional to 120,565.24, 166,353.10 and 72,159.64

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Solution

The fourth proportional to 120,565.24, 166,353.10 and 72,159.64 is: 99,564.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,565.24 : 166,353.10 = 72,159.64 : x
  2. Step 2: Convert to fraction form
    120,565.24/166,353.10 = 72,159.64/x
  3. Step 3: Cross multiply
    120,565.24x = 166,353.10 × 72,159.64
  4. Step 4: Simplify right side
    120,565.24x = 12,003,979,808.88
  5. Step 5: Solve for x
    x = 12,003,979,808.88/120,565.24
  6. Step 6: Final answer
    x = 99,564.18

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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.