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Finding the Fourth Proportional to 142,895.28, 214,334.28 and 63,988.32

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Solution

The fourth proportional to 142,895.28, 214,334.28 and 63,988.32 is: 95,978.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,895.28 : 214,334.28 = 63,988.32 : x
  2. Step 2: Convert to fraction form
    142,895.28/214,334.28 = 63,988.32/x
  3. Step 3: Cross multiply
    142,895.28x = 214,334.28 × 63,988.32
  4. Step 4: Simplify right side
    142,895.28x = 13,714,890,495.61
  5. Step 5: Solve for x
    x = 13,714,890,495.61/142,895.28
  6. Step 6: Final answer
    x = 95,978.61

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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.