Home / 136,780.75-188,756.93-76,350.90

Finding the Fourth Proportional to 136,780.75, 188,756.93 and 76,350.90

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Solution

The fourth proportional to 136,780.75, 188,756.93 and 76,350.90 is: 105,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.75 : 188,756.93 = 76,350.90 : x
  2. Step 2: Convert to fraction form
    136,780.75/188,756.93 = 76,350.90/x
  3. Step 3: Cross multiply
    136,780.75x = 188,756.93 × 76,350.90
  4. Step 4: Simplify right side
    136,780.75x = 14,411,762,385.45
  5. Step 5: Solve for x
    x = 14,411,762,385.45/136,780.75
  6. Step 6: Final answer
    x = 105,363.97

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1.5x scale

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.