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Finding the Fourth Proportional to 99,351.76, 137,106 and 54,030.28

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Solution

The fourth proportional to 99,351.76, 137,106 and 54,030.28 is: 74,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,351.76 : 137,106 = 54,030.28 : x
  2. Step 2: Convert to fraction form
    99,351.76/137,106 = 54,030.28/x
  3. Step 3: Cross multiply
    99,351.76x = 137,106 × 54,030.28
  4. Step 4: Simplify right side
    99,351.76x = 7,407,875,569.68
  5. Step 5: Solve for x
    x = 7,407,875,569.68/99,351.76
  6. Step 6: Final answer
    x = 74,562.10

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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.