Home / 112,904.82-155,790.95-65,149.11

Finding the Fourth Proportional to 112,904.82, 155,790.95 and 65,149.11

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Solution

The fourth proportional to 112,904.82, 155,790.95 and 65,149.11 is: 89,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,904.82 : 155,790.95 = 65,149.11 : x
  2. Step 2: Convert to fraction form
    112,904.82/155,790.95 = 65,149.11/x
  3. Step 3: Cross multiply
    112,904.82x = 155,790.95 × 65,149.11
  4. Step 4: Simplify right side
    112,904.82x = 10,149,641,412.81
  5. Step 5: Solve for x
    x = 10,149,641,412.81/112,904.82
  6. Step 6: Final answer
    x = 89,895.55

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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.