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Finding the Fourth Proportional to 120,775.88, 180,350.52 and 98,633.18

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Solution

The fourth proportional to 120,775.88, 180,350.52 and 98,633.18 is: 147,285.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,775.88 : 180,350.52 = 98,633.18 : x
  2. Step 2: Convert to fraction form
    120,775.88/180,350.52 = 98,633.18/x
  3. Step 3: Cross multiply
    120,775.88x = 180,350.52 × 98,633.18
  4. Step 4: Simplify right side
    120,775.88x = 17,788,545,302.25
  5. Step 5: Solve for x
    x = 17,788,545,302.25/120,775.88
  6. Step 6: Final answer
    x = 147,285.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.