Home / 112,789.67-155,641.57-61,794.23

Finding the Fourth Proportional to 112,789.67, 155,641.57 and 61,794.23

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Solution

The fourth proportional to 112,789.67, 155,641.57 and 61,794.23 is: 85,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,789.67 : 155,641.57 = 61,794.23 : x
  2. Step 2: Convert to fraction form
    112,789.67/155,641.57 = 61,794.23/x
  3. Step 3: Cross multiply
    112,789.67x = 155,641.57 × 61,794.23
  4. Step 4: Simplify right side
    112,789.67x = 9,617,750,041.45
  5. Step 5: Solve for x
    x = 9,617,750,041.45/112,789.67
  6. Step 6: Final answer
    x = 85,271.55

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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.