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Finding the Fourth Proportional to 170,290.64, 234,965.13 and 98,666.30

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Solution

The fourth proportional to 170,290.64, 234,965.13 and 98,666.30 is: 136,138.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,290.64 : 234,965.13 = 98,666.30 : x
  2. Step 2: Convert to fraction form
    170,290.64/234,965.13 = 98,666.30/x
  3. Step 3: Cross multiply
    170,290.64x = 234,965.13 × 98,666.30
  4. Step 4: Simplify right side
    170,290.64x = 23,183,140,006.12
  5. Step 5: Solve for x
    x = 23,183,140,006.12/170,290.64
  6. Step 6: Final answer
    x = 136,138.66

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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.