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Finding the Fourth Proportional to 176,121.82, 243,048.10 and 99,639.39

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Solution

The fourth proportional to 176,121.82, 243,048.10 and 99,639.39 is: 137,502.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,121.82 : 243,048.10 = 99,639.39 : x
  2. Step 2: Convert to fraction form
    176,121.82/243,048.10 = 99,639.39/x
  3. Step 3: Cross multiply
    176,121.82x = 243,048.10 × 99,639.39
  4. Step 4: Simplify right side
    176,121.82x = 24,217,164,424.66
  5. Step 5: Solve for x
    x = 24,217,164,424.66/176,121.82
  6. Step 6: Final answer
    x = 137,502.35

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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.