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Finding the Fourth Proportional to 145,305.76, 200,516.88 and 88,811.68

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Solution

The fourth proportional to 145,305.76, 200,516.88 and 88,811.68 is: 122,557.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,305.76 : 200,516.88 = 88,811.68 : x
  2. Step 2: Convert to fraction form
    145,305.76/200,516.88 = 88,811.68/x
  3. Step 3: Cross multiply
    145,305.76x = 200,516.88 × 88,811.68
  4. Step 4: Simplify right side
    145,305.76x = 17,808,240,981.16
  5. Step 5: Solve for x
    x = 17,808,240,981.16/145,305.76
  6. Step 6: Final answer
    x = 122,557.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.