Home / 99,738.51-137,639.18-63,928.53

Finding the Fourth Proportional to 99,738.51, 137,639.18 and 63,928.53

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Solution

The fourth proportional to 99,738.51, 137,639.18 and 63,928.53 is: 88,221.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,738.51 : 137,639.18 = 63,928.53 : x
  2. Step 2: Convert to fraction form
    99,738.51/137,639.18 = 63,928.53/x
  3. Step 3: Cross multiply
    99,738.51x = 137,639.18 × 63,928.53
  4. Step 4: Simplify right side
    99,738.51x = 8,799,070,447.81
  5. Step 5: Solve for x
    x = 8,799,070,447.81/99,738.51
  6. Step 6: Final answer
    x = 88,221.39

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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.