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Finding the Fourth Proportional to 113,342.40, 170,862.48 and 105,730.56

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Solution

The fourth proportional to 113,342.40, 170,862.48 and 105,730.56 is: 159,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,342.40 : 170,862.48 = 105,730.56 : x
  2. Step 2: Convert to fraction form
    113,342.40/170,862.48 = 105,730.56/x
  3. Step 3: Cross multiply
    113,342.40x = 170,862.48 × 105,730.56
  4. Step 4: Simplify right side
    113,342.40x = 18,065,385,693.39
  5. Step 5: Solve for x
    x = 18,065,385,693.39/113,342.40
  6. Step 6: Final answer
    x = 159,387.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.