Home / 112,839.18-155,712.29-65,089.68

Finding the Fourth Proportional to 112,839.18, 155,712.29 and 65,089.68

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Solution

The fourth proportional to 112,839.18, 155,712.29 and 65,089.68 is: 89,820.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,839.18 : 155,712.29 = 65,089.68 : x
  2. Step 2: Convert to fraction form
    112,839.18/155,712.29 = 65,089.68/x
  3. Step 3: Cross multiply
    112,839.18x = 155,712.29 × 65,089.68
  4. Step 4: Simplify right side
    112,839.18x = 10,135,262,802.72
  5. Step 5: Solve for x
    x = 10,135,262,802.72/112,839.18
  6. Step 6: Final answer
    x = 89,820.42

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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.