Home / 159,402.15-219,981.75-91,438.29

Finding the Fourth Proportional to 159,402.15, 219,981.75 and 91,438.29

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Solution

The fourth proportional to 159,402.15, 219,981.75 and 91,438.29 is: 126,188.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,402.15 : 219,981.75 = 91,438.29 : x
  2. Step 2: Convert to fraction form
    159,402.15/219,981.75 = 91,438.29/x
  3. Step 3: Cross multiply
    159,402.15x = 219,981.75 × 91,438.29
  4. Step 4: Simplify right side
    159,402.15x = 20,114,755,051.21
  5. Step 5: Solve for x
    x = 20,114,755,051.21/159,402.15
  6. Step 6: Final answer
    x = 126,188.73

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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.