Home / 120,001.80-180,002.70-112,168.20

Finding the Fourth Proportional to 120,001.80, 180,002.70 and 112,168.20

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Solution

The fourth proportional to 120,001.80, 180,002.70 and 112,168.20 is: 168,252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,001.80 : 180,002.70 = 112,168.20 : x
  2. Step 2: Convert to fraction form
    120,001.80/180,002.70 = 112,168.20/x
  3. Step 3: Cross multiply
    120,001.80x = 180,002.70 × 112,168.20
  4. Step 4: Simplify right side
    120,001.80x = 20,190,578,854.14
  5. Step 5: Solve for x
    x = 20,190,578,854.14/120,001.80
  6. Step 6: Final answer
    x = 168,252.30

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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.