Home / 99,661.12-137,534.16-54,339.46

Finding the Fourth Proportional to 99,661.12, 137,534.16 and 54,339.46

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Solution

The fourth proportional to 99,661.12, 137,534.16 and 54,339.46 is: 74,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.12 : 137,534.16 = 54,339.46 : x
  2. Step 2: Convert to fraction form
    99,661.12/137,534.16 = 54,339.46/x
  3. Step 3: Cross multiply
    99,661.12x = 137,534.16 × 54,339.46
  4. Step 4: Simplify right side
    99,661.12x = 7,473,531,985.95
  5. Step 5: Solve for x
    x = 7,473,531,985.95/99,661.12
  6. Step 6: Final answer
    x = 74,989.44

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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.