Home / 112,140.80-154,754.56-61,839.36

Finding the Fourth Proportional to 112,140.80, 154,754.56 and 61,839.36

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Solution

The fourth proportional to 112,140.80, 154,754.56 and 61,839.36 is: 85,338.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,140.80 : 154,754.56 = 61,839.36 : x
  2. Step 2: Convert to fraction form
    112,140.80/154,754.56 = 61,839.36/x
  3. Step 3: Cross multiply
    112,140.80x = 154,754.56 × 61,839.36
  4. Step 4: Simplify right side
    112,140.80x = 9,569,922,947.48
  5. Step 5: Solve for x
    x = 9,569,922,947.48/112,140.80
  6. Step 6: Final answer
    x = 85,338.46

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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.