Home / 99,611.03-137,459.18-54,288.05

Finding the Fourth Proportional to 99,611.03, 137,459.18 and 54,288.05

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Solution

The fourth proportional to 99,611.03, 137,459.18 and 54,288.05 is: 74,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.03 : 137,459.18 = 54,288.05 : x
  2. Step 2: Convert to fraction form
    99,611.03/137,459.18 = 54,288.05/x
  3. Step 3: Cross multiply
    99,611.03x = 137,459.18 × 54,288.05
  4. Step 4: Simplify right side
    99,611.03x = 7,462,390,565.36
  5. Step 5: Solve for x
    x = 7,462,390,565.36/99,611.03
  6. Step 6: Final answer
    x = 74,915.31

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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.