Home / 144,511,680.25-199,426,311.28-78,432,178.53

Finding the Fourth Proportional to 144,511,680.25, 199,426,311.28 and 78,432,178.53

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Solution

The fourth proportional to 144,511,680.25, 199,426,311.28 and 78,432,178.53 is: 108,236,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,511,680.25 : 199,426,311.28 = 78,432,178.53 : x
  2. Step 2: Convert to fraction form
    144,511,680.25/199,426,311.28 = 78,432,178.53/x
  3. Step 3: Cross multiply
    144,511,680.25x = 199,426,311.28 × 78,432,178.53
  4. Step 4: Simplify right side
    144,511,680.25x = 15,641,440,050,296,630
  5. Step 5: Solve for x
    x = 15,641,440,050,296,630/144,511,680.25
  6. Step 6: Final answer
    x = 108,236,510.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.