Home / 129,487,538.40-194,200,203.60-74,781,823.20

Finding the Fourth Proportional to 129,487,538.40, 194,200,203.60 and 74,781,823.20

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Solution

The fourth proportional to 129,487,538.40, 194,200,203.60 and 74,781,823.20 is: 112,154,771.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,487,538.40 : 194,200,203.60 = 74,781,823.20 : x
  2. Step 2: Convert to fraction form
    129,487,538.40/194,200,203.60 = 74,781,823.20/x
  3. Step 3: Cross multiply
    129,487,538.40x = 194,200,203.60 × 74,781,823.20
  4. Step 4: Simplify right side
    129,487,538.40x = 14,522,645,291,019,204
  5. Step 5: Solve for x
    x = 14,522,645,291,019,204/129,487,538.40
  6. Step 6: Final answer
    x = 112,154,771.57

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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.