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Finding the Fourth Proportional to 113,585.80, 170,232.90 and 69,165.40

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Solution

The fourth proportional to 113,585.80, 170,232.90 and 69,165.40 is: 103,659.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,585.80 : 170,232.90 = 69,165.40 : x
  2. Step 2: Convert to fraction form
    113,585.80/170,232.90 = 69,165.40/x
  3. Step 3: Cross multiply
    113,585.80x = 170,232.90 × 69,165.40
  4. Step 4: Simplify right side
    113,585.80x = 11,774,226,621.66
  5. Step 5: Solve for x
    x = 11,774,226,621.66/113,585.80
  6. Step 6: Final answer
    x = 103,659.32

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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.