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Finding the Fourth Proportional to 143,510.29, 215,398.45 and 72,482.81

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Solution

The fourth proportional to 143,510.29, 215,398.45 and 72,482.81 is: 108,791.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,510.29 : 215,398.45 = 72,482.81 : x
  2. Step 2: Convert to fraction form
    143,510.29/215,398.45 = 72,482.81/x
  3. Step 3: Cross multiply
    143,510.29x = 215,398.45 × 72,482.81
  4. Step 4: Simplify right side
    143,510.29x = 15,612,683,486.24
  5. Step 5: Solve for x
    x = 15,612,683,486.24/143,510.29
  6. Step 6: Final answer
    x = 108,791.39

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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.