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Finding the Fourth Proportional to 86,874.04, 130,174.98 and 69,339.16

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Solution

The fourth proportional to 86,874.04, 130,174.98 and 69,339.16 is: 103,900.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,874.04 : 130,174.98 = 69,339.16 : x
  2. Step 2: Convert to fraction form
    86,874.04/130,174.98 = 69,339.16/x
  3. Step 3: Cross multiply
    86,874.04x = 130,174.98 × 69,339.16
  4. Step 4: Simplify right side
    86,874.04x = 9,026,223,766.22
  5. Step 5: Solve for x
    x = 9,026,223,766.22/86,874.04
  6. Step 6: Final answer
    x = 103,900.13

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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.