Home / 99,869.45-137,819.14-54,547.45

Finding the Fourth Proportional to 99,869.45, 137,819.14 and 54,547.45

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Solution

The fourth proportional to 99,869.45, 137,819.14 and 54,547.45 is: 75,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,869.45 : 137,819.14 = 54,547.45 : x
  2. Step 2: Convert to fraction form
    99,869.45/137,819.14 = 54,547.45/x
  3. Step 3: Cross multiply
    99,869.45x = 137,819.14 × 54,547.45
  4. Step 4: Simplify right side
    99,869.45x = 7,517,682,648.19
  5. Step 5: Solve for x
    x = 7,517,682,648.19/99,869.45
  6. Step 6: Final answer
    x = 75,275.10

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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.