Home / 131,890,600.80-197,743,741.20-78,010,178.40

Finding the Fourth Proportional to 131,890,600.80, 197,743,741.20 and 78,010,178.40

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Solution

The fourth proportional to 131,890,600.80, 197,743,741.20 and 78,010,178.40 is: 116,960,757.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,890,600.80 : 197,743,741.20 = 78,010,178.40 : x
  2. Step 2: Convert to fraction form
    131,890,600.80/197,743,741.20 = 78,010,178.40/x
  3. Step 3: Cross multiply
    131,890,600.80x = 197,743,741.20 × 78,010,178.40
  4. Step 4: Simplify right side
    131,890,600.80x = 15,426,024,528,495,430
  5. Step 5: Solve for x
    x = 15,426,024,528,495,430/131,890,600.80
  6. Step 6: Final answer
    x = 116,960,757.13

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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.