Home / 120,431.60-180,122.48-70,393.04

Finding the Fourth Proportional to 120,431.60, 180,122.48 and 70,393.04

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Solution

The fourth proportional to 120,431.60, 180,122.48 and 70,393.04 is: 105,282.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,431.60 : 180,122.48 = 70,393.04 : x
  2. Step 2: Convert to fraction form
    120,431.60/180,122.48 = 70,393.04/x
  3. Step 3: Cross multiply
    120,431.60x = 180,122.48 × 70,393.04
  4. Step 4: Simplify right side
    120,431.60x = 12,679,368,939.54
  5. Step 5: Solve for x
    x = 12,679,368,939.54/120,431.60
  6. Step 6: Final answer
    x = 105,282.74

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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.