Home / 112,357.70-155,115.90-76,600.25

Finding the Fourth Proportional to 112,357.70, 155,115.90 and 76,600.25

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Solution

The fourth proportional to 112,357.70, 155,115.90 and 76,600.25 is: 105,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,357.70 : 155,115.90 = 76,600.25 : x
  2. Step 2: Convert to fraction form
    112,357.70/155,115.90 = 76,600.25/x
  3. Step 3: Cross multiply
    112,357.70x = 155,115.90 × 76,600.25
  4. Step 4: Simplify right side
    112,357.70x = 11,881,916,718.98
  5. Step 5: Solve for x
    x = 11,881,916,718.98/112,357.70
  6. Step 6: Final answer
    x = 105,750.80

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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.