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Finding the Fourth Proportional to 113,386.60, 170,079.90 and 38,526.40

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Solution

The fourth proportional to 113,386.60, 170,079.90 and 38,526.40 is: 57,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,386.60 : 170,079.90 = 38,526.40 : x
  2. Step 2: Convert to fraction form
    113,386.60/170,079.90 = 38,526.40/x
  3. Step 3: Cross multiply
    113,386.60x = 170,079.90 × 38,526.40
  4. Step 4: Simplify right side
    113,386.60x = 6,552,566,259.36
  5. Step 5: Solve for x
    x = 6,552,566,259.36/113,386.60
  6. Step 6: Final answer
    x = 57,789.60

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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.