Home / 120,573.17-180,897.11-87,305.25

Finding the Fourth Proportional to 120,573.17, 180,897.11 and 87,305.25

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Solution

The fourth proportional to 120,573.17, 180,897.11 and 87,305.25 is: 130,984.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,573.17 : 180,897.11 = 87,305.25 : x
  2. Step 2: Convert to fraction form
    120,573.17/180,897.11 = 87,305.25/x
  3. Step 3: Cross multiply
    120,573.17x = 180,897.11 × 87,305.25
  4. Step 4: Simplify right side
    120,573.17x = 15,793,267,412.83
  5. Step 5: Solve for x
    x = 15,793,267,412.83/120,573.17
  6. Step 6: Final answer
    x = 130,984.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.