Home / 143,397.30-215,095.95-129,619.20

Finding the Fourth Proportional to 143,397.30, 215,095.95 and 129,619.20

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Solution

The fourth proportional to 143,397.30, 215,095.95 and 129,619.20 is: 194,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,397.30 : 215,095.95 = 129,619.20 : x
  2. Step 2: Convert to fraction form
    143,397.30/215,095.95 = 129,619.20/x
  3. Step 3: Cross multiply
    143,397.30x = 215,095.95 × 129,619.20
  4. Step 4: Simplify right side
    143,397.30x = 27,880,564,962.24
  5. Step 5: Solve for x
    x = 27,880,564,962.24/143,397.30
  6. Step 6: Final answer
    x = 194,428.80

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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.