Home / 113,812.61-170,585.96-85,642.11

Finding the Fourth Proportional to 113,812.61, 170,585.96 and 85,642.11

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Solution

The fourth proportional to 113,812.61, 170,585.96 and 85,642.11 is: 128,363.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,812.61 : 170,585.96 = 85,642.11 : x
  2. Step 2: Convert to fraction form
    113,812.61/170,585.96 = 85,642.11/x
  3. Step 3: Cross multiply
    113,812.61x = 170,585.96 × 85,642.11
  4. Step 4: Simplify right side
    113,812.61x = 14,609,341,122.57
  5. Step 5: Solve for x
    x = 14,609,341,122.57/113,812.61
  6. Step 6: Final answer
    x = 128,363.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.