Home / 102,586.13-141,580.87-85,328.04

Finding the Fourth Proportional to 102,586.13, 141,580.87 and 85,328.04

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Solution

The fourth proportional to 102,586.13, 141,580.87 and 85,328.04 is: 117,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,586.13 : 141,580.87 = 85,328.04 : x
  2. Step 2: Convert to fraction form
    102,586.13/141,580.87 = 85,328.04/x
  3. Step 3: Cross multiply
    102,586.13x = 141,580.87 × 85,328.04
  4. Step 4: Simplify right side
    102,586.13x = 12,080,818,456.20
  5. Step 5: Solve for x
    x = 12,080,818,456.20/102,586.13
  6. Step 6: Final answer
    x = 117,762.69

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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.