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Finding the Fourth Proportional to 142,558, 196,503.40 and 112,295.40

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Solution

The fourth proportional to 142,558, 196,503.40 and 112,295.40 is: 154,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,558 : 196,503.40 = 112,295.40 : x
  2. Step 2: Convert to fraction form
    142,558/196,503.40 = 112,295.40/x
  3. Step 3: Cross multiply
    142,558x = 196,503.40 × 112,295.40
  4. Step 4: Simplify right side
    142,558x = 22,066,427,904.36
  5. Step 5: Solve for x
    x = 22,066,427,904.36/142,558
  6. Step 6: Final answer
    x = 154,789.12

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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.