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Finding the Fourth Proportional to 176,462.65, 243,518.05 and 99,981.59

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Solution

The fourth proportional to 176,462.65, 243,518.05 and 99,981.59 is: 137,974.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,462.65 : 243,518.05 = 99,981.59 : x
  2. Step 2: Convert to fraction form
    176,462.65/243,518.05 = 99,981.59/x
  3. Step 3: Cross multiply
    176,462.65x = 243,518.05 × 99,981.59
  4. Step 4: Simplify right side
    176,462.65x = 24,347,321,547.48
  5. Step 5: Solve for x
    x = 24,347,321,547.48/176,462.65
  6. Step 6: Final answer
    x = 137,974.36

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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.