Home / 125,455.04-173,209.08-77,759.12

Finding the Fourth Proportional to 125,455.04, 173,209.08 and 77,759.12

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Solution

The fourth proportional to 125,455.04, 173,209.08 and 77,759.12 is: 107,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.04 : 173,209.08 = 77,759.12 : x
  2. Step 2: Convert to fraction form
    125,455.04/173,209.08 = 77,759.12/x
  3. Step 3: Cross multiply
    125,455.04x = 173,209.08 × 77,759.12
  4. Step 4: Simplify right side
    125,455.04x = 13,468,585,636.81
  5. Step 5: Solve for x
    x = 13,468,585,636.81/125,455.04
  6. Step 6: Final answer
    x = 107,357.87

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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.