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Finding the Fourth Proportional to 111,558, 153,951.12 and 61,258.08

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Solution

The fourth proportional to 111,558, 153,951.12 and 61,258.08 is: 84,536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,558 : 153,951.12 = 61,258.08 : x
  2. Step 2: Convert to fraction form
    111,558/153,951.12 = 61,258.08/x
  3. Step 3: Cross multiply
    111,558x = 153,951.12 × 61,258.08
  4. Step 4: Simplify right side
    111,558x = 9,430,750,025.05
  5. Step 5: Solve for x
    x = 9,430,750,025.05/111,558
  6. Step 6: Final answer
    x = 84,536.74

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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.