Home / 120,180,010.30-180,270,015.45-83,829,445.90

Finding the Fourth Proportional to 120,180,010.30, 180,270,015.45 and 83,829,445.90

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Solution

The fourth proportional to 120,180,010.30, 180,270,015.45 and 83,829,445.90 is: 125,744,168.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,180,010.30 : 180,270,015.45 = 83,829,445.90 : x
  2. Step 2: Convert to fraction form
    120,180,010.30/180,270,015.45 = 83,829,445.90/x
  3. Step 3: Cross multiply
    120,180,010.30x = 180,270,015.45 × 83,829,445.90
  4. Step 4: Simplify right side
    120,180,010.30x = 15,111,935,507,557,940
  5. Step 5: Solve for x
    x = 15,111,935,507,557,940/120,180,010.30
  6. Step 6: Final answer
    x = 125,744,168.85

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1.5x scale

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.