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Finding the Fourth Proportional to 176,488.92, 243,560.61 and 103,878.72

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Solution

The fourth proportional to 176,488.92, 243,560.61 and 103,878.72 is: 143,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,488.92 : 243,560.61 = 103,878.72 : x
  2. Step 2: Convert to fraction form
    176,488.92/243,560.61 = 103,878.72/x
  3. Step 3: Cross multiply
    176,488.92x = 243,560.61 × 103,878.72
  4. Step 4: Simplify right side
    176,488.92x = 25,300,764,409.22
  5. Step 5: Solve for x
    x = 25,300,764,409.22/176,488.92
  6. Step 6: Final answer
    x = 143,356.11

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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.