Home / 120,384,138.60-180,576,207.90-89,728,036.20

Finding the Fourth Proportional to 120,384,138.60, 180,576,207.90 and 89,728,036.20

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Solution

The fourth proportional to 120,384,138.60, 180,576,207.90 and 89,728,036.20 is: 134,592,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,384,138.60 : 180,576,207.90 = 89,728,036.20 : x
  2. Step 2: Convert to fraction form
    120,384,138.60/180,576,207.90 = 89,728,036.20/x
  3. Step 3: Cross multiply
    120,384,138.60x = 180,576,207.90 × 89,728,036.20
  4. Step 4: Simplify right side
    120,384,138.60x = 16,202,748,519,309,928
  5. Step 5: Solve for x
    x = 16,202,748,519,309,928/120,384,138.60
  6. Step 6: Final answer
    x = 134,592,054.30

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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.