Home / 75,155.80-112,145.60-74,718.40

Finding the Fourth Proportional to 75,155.80, 112,145.60 and 74,718.40

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Solution

The fourth proportional to 75,155.80, 112,145.60 and 74,718.40 is: 111,492.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,155.80 : 112,145.60 = 74,718.40 : x
  2. Step 2: Convert to fraction form
    75,155.80/112,145.60 = 74,718.40/x
  3. Step 3: Cross multiply
    75,155.80x = 112,145.60 × 74,718.40
  4. Step 4: Simplify right side
    75,155.80x = 8,379,339,799.04
  5. Step 5: Solve for x
    x = 8,379,339,799.04/75,155.80
  6. Step 6: Final answer
    x = 111,492.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.