Home / 120,637.40-180,956.10-101,100.20

Finding the Fourth Proportional to 120,637.40, 180,956.10 and 101,100.20

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Solution

The fourth proportional to 120,637.40, 180,956.10 and 101,100.20 is: 151,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,637.40 : 180,956.10 = 101,100.20 : x
  2. Step 2: Convert to fraction form
    120,637.40/180,956.10 = 101,100.20/x
  3. Step 3: Cross multiply
    120,637.40x = 180,956.10 × 101,100.20
  4. Step 4: Simplify right side
    120,637.40x = 18,294,697,901.22
  5. Step 5: Solve for x
    x = 18,294,697,901.22/120,637.40
  6. Step 6: Final answer
    x = 151,650.30

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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.