Home / 143,758.16-215,549.40-68,901.20

Finding the Fourth Proportional to 143,758.16, 215,549.40 and 68,901.20

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Solution

The fourth proportional to 143,758.16, 215,549.40 and 68,901.20 is: 103,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,758.16 : 215,549.40 = 68,901.20 : x
  2. Step 2: Convert to fraction form
    143,758.16/215,549.40 = 68,901.20/x
  3. Step 3: Cross multiply
    143,758.16x = 215,549.40 × 68,901.20
  4. Step 4: Simplify right side
    143,758.16x = 14,851,612,319.28
  5. Step 5: Solve for x
    x = 14,851,612,319.28/143,758.16
  6. Step 6: Final answer
    x = 103,309.70

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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.