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Finding the Fourth Proportional to 138,830.63, 208,088.51 and 63,795.72

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Solution

The fourth proportional to 138,830.63, 208,088.51 and 63,795.72 is: 95,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,830.63 : 208,088.51 = 63,795.72 : x
  2. Step 2: Convert to fraction form
    138,830.63/208,088.51 = 63,795.72/x
  3. Step 3: Cross multiply
    138,830.63x = 208,088.51 × 63,795.72
  4. Step 4: Simplify right side
    138,830.63x = 13,275,156,000.20
  5. Step 5: Solve for x
    x = 13,275,156,000.20/138,830.63
  6. Step 6: Final answer
    x = 95,621.24

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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.