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Finding the Fourth Proportional to 136,763.67, 188,734.12 and 76,334.30

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Solution

The fourth proportional to 136,763.67, 188,734.12 and 76,334.30 is: 105,341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,763.67 : 188,734.12 = 76,334.30 : x
  2. Step 2: Convert to fraction form
    136,763.67/188,734.12 = 76,334.30/x
  3. Step 3: Cross multiply
    136,763.67x = 188,734.12 × 76,334.30
  4. Step 4: Simplify right side
    136,763.67x = 14,406,886,509.56
  5. Step 5: Solve for x
    x = 14,406,886,509.56/136,763.67
  6. Step 6: Final answer
    x = 105,341.47

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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.