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Finding the Fourth Proportional to 143,751.36, 215,364.18 and 104,210.40

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Solution

The fourth proportional to 143,751.36, 215,364.18 and 104,210.40 is: 156,125.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,751.36 : 215,364.18 = 104,210.40 : x
  2. Step 2: Convert to fraction form
    143,751.36/215,364.18 = 104,210.40/x
  3. Step 3: Cross multiply
    143,751.36x = 215,364.18 × 104,210.40
  4. Step 4: Simplify right side
    143,751.36x = 22,443,187,343.47
  5. Step 5: Solve for x
    x = 22,443,187,343.47/143,751.36
  6. Step 6: Final answer
    x = 156,125.04

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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.