Home / 109,666.47-151,474.67-79,403.88

Finding the Fourth Proportional to 109,666.47, 151,474.67 and 79,403.88

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Solution

The fourth proportional to 109,666.47, 151,474.67 and 79,403.88 is: 109,675.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,666.47 : 151,474.67 = 79,403.88 : x
  2. Step 2: Convert to fraction form
    109,666.47/151,474.67 = 79,403.88/x
  3. Step 3: Cross multiply
    109,666.47x = 151,474.67 × 79,403.88
  4. Step 4: Simplify right side
    109,666.47x = 12,027,676,519.72
  5. Step 5: Solve for x
    x = 12,027,676,519.72/109,666.47
  6. Step 6: Final answer
    x = 109,675.06

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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.