Home / 99,985.32-137,983.41-54,666.36

Finding the Fourth Proportional to 99,985.32, 137,983.41 and 54,666.36

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Solution

The fourth proportional to 99,985.32, 137,983.41 and 54,666.36 is: 75,441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,985.32 : 137,983.41 = 54,666.36 : x
  2. Step 2: Convert to fraction form
    99,985.32/137,983.41 = 54,666.36/x
  3. Step 3: Cross multiply
    99,985.32x = 137,983.41 × 54,666.36
  4. Step 4: Simplify right side
    99,985.32x = 7,543,050,765.09
  5. Step 5: Solve for x
    x = 7,543,050,765.09/99,985.32
  6. Step 6: Final answer
    x = 75,441.58

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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.