Home / 159,432.13-220,026.32-87,812.12

Finding the Fourth Proportional to 159,432.13, 220,026.32 and 87,812.12

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Solution

The fourth proportional to 159,432.13, 220,026.32 and 87,812.12 is: 121,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,432.13 : 220,026.32 = 87,812.12 : x
  2. Step 2: Convert to fraction form
    159,432.13/220,026.32 = 87,812.12/x
  3. Step 3: Cross multiply
    159,432.13x = 220,026.32 × 87,812.12
  4. Step 4: Simplify right side
    159,432.13x = 19,320,977,175.94
  5. Step 5: Solve for x
    x = 19,320,977,175.94/159,432.13
  6. Step 6: Final answer
    x = 121,186.22

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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.