Home / 112,778.84-155,628.85-64,378.85

Finding the Fourth Proportional to 112,778.84, 155,628.85 and 64,378.85

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Solution

The fourth proportional to 112,778.84, 155,628.85 and 64,378.85 is: 88,839.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,778.84 : 155,628.85 = 64,378.85 : x
  2. Step 2: Convert to fraction form
    112,778.84/155,628.85 = 64,378.85/x
  3. Step 3: Cross multiply
    112,778.84x = 155,628.85 × 64,378.85
  4. Step 4: Simplify right side
    112,778.84x = 10,019,206,024.19
  5. Step 5: Solve for x
    x = 10,019,206,024.19/112,778.84
  6. Step 6: Final answer
    x = 88,839.41

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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.