Home / 129,029,315.20-193,539,825.60-42,771,702.40

Finding the Fourth Proportional to 129,029,315.20, 193,539,825.60 and 42,771,702.40

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Solution

The fourth proportional to 129,029,315.20, 193,539,825.60 and 42,771,702.40 is: 64,156,178.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,029,315.20 : 193,539,825.60 = 42,771,702.40 : x
  2. Step 2: Convert to fraction form
    129,029,315.20/193,539,825.60 = 42,771,702.40/x
  3. Step 3: Cross multiply
    129,029,315.20x = 193,539,825.60 × 42,771,702.40
  4. Step 4: Simplify right side
    129,029,315.20x = 8,278,027,823,111,101
  5. Step 5: Solve for x
    x = 8,278,027,823,111,101/129,029,315.20
  6. Step 6: Final answer
    x = 64,156,178.85

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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.