Home / 86,743.06-129,758.18-69,247.06

Finding the Fourth Proportional to 86,743.06, 129,758.18 and 69,247.06

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Solution

The fourth proportional to 86,743.06, 129,758.18 and 69,247.06 is: 103,586.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,743.06 : 129,758.18 = 69,247.06 : x
  2. Step 2: Convert to fraction form
    86,743.06/129,758.18 = 69,247.06/x
  3. Step 3: Cross multiply
    86,743.06x = 129,758.18 × 69,247.06
  4. Step 4: Simplify right side
    86,743.06x = 8,985,372,475.95
  5. Step 5: Solve for x
    x = 8,985,372,475.95/86,743.06
  6. Step 6: Final answer
    x = 103,586.07

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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.