Home / 153,869.31-212,452.13-99,453.68

Finding the Fourth Proportional to 153,869.31, 212,452.13 and 99,453.68

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Solution

The fourth proportional to 153,869.31, 212,452.13 and 99,453.68 is: 137,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,869.31 : 212,452.13 = 99,453.68 : x
  2. Step 2: Convert to fraction form
    153,869.31/212,452.13 = 99,453.68/x
  3. Step 3: Cross multiply
    153,869.31x = 212,452.13 × 99,453.68
  4. Step 4: Simplify right side
    153,869.31x = 21,129,146,152.34
  5. Step 5: Solve for x
    x = 21,129,146,152.34/153,869.31
  6. Step 6: Final answer
    x = 137,318.78

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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.