Home / 120,239.40-165,877.38-72,464.52

Finding the Fourth Proportional to 120,239.40, 165,877.38 and 72,464.52

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Solution

The fourth proportional to 120,239.40, 165,877.38 and 72,464.52 is: 99,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,239.40 : 165,877.38 = 72,464.52 : x
  2. Step 2: Convert to fraction form
    120,239.40/165,877.38 = 72,464.52/x
  3. Step 3: Cross multiply
    120,239.40x = 165,877.38 × 72,464.52
  4. Step 4: Simplify right side
    120,239.40x = 12,020,224,720.56
  5. Step 5: Solve for x
    x = 12,020,224,720.56/120,239.40
  6. Step 6: Final answer
    x = 99,969.10

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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.