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Finding the Fourth Proportional to 143,344, 215,061.36 and 64,465.12

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Solution

The fourth proportional to 143,344, 215,061.36 and 64,465.12 is: 96,718.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,344 : 215,061.36 = 64,465.12 : x
  2. Step 2: Convert to fraction form
    143,344/215,061.36 = 64,465.12/x
  3. Step 3: Cross multiply
    143,344x = 215,061.36 × 64,465.12
  4. Step 4: Simplify right side
    143,344x = 13,863,956,379.76
  5. Step 5: Solve for x
    x = 13,863,956,379.76/143,344
  6. Step 6: Final answer
    x = 96,718.08

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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.