Home / 120,424.20-180,417.60-73,622.40

Finding the Fourth Proportional to 120,424.20, 180,417.60 and 73,622.40

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Solution

The fourth proportional to 120,424.20, 180,417.60 and 73,622.40 is: 110,299.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,424.20 : 180,417.60 = 73,622.40 : x
  2. Step 2: Convert to fraction form
    120,424.20/180,417.60 = 73,622.40/x
  3. Step 3: Cross multiply
    120,424.20x = 180,417.60 × 73,622.40
  4. Step 4: Simplify right side
    120,424.20x = 13,282,776,714.24
  5. Step 5: Solve for x
    x = 13,282,776,714.24/120,424.20
  6. Step 6: Final answer
    x = 110,299.90

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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.