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Finding the Fourth Proportional to 125,920.80, 188,881.20 and 109,518.30

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Solution

The fourth proportional to 125,920.80, 188,881.20 and 109,518.30 is: 164,277.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,920.80 : 188,881.20 = 109,518.30 : x
  2. Step 2: Convert to fraction form
    125,920.80/188,881.20 = 109,518.30/x
  3. Step 3: Cross multiply
    125,920.80x = 188,881.20 × 109,518.30
  4. Step 4: Simplify right side
    125,920.80x = 20,685,947,925.96
  5. Step 5: Solve for x
    x = 20,685,947,925.96/125,920.80
  6. Step 6: Final answer
    x = 164,277.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.