Home / 135,818.45-187,441.31-79,248.05

Finding the Fourth Proportional to 135,818.45, 187,441.31 and 79,248.05

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Solution

The fourth proportional to 135,818.45, 187,441.31 and 79,248.05 is: 109,369.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,818.45 : 187,441.31 = 79,248.05 : x
  2. Step 2: Convert to fraction form
    135,818.45/187,441.31 = 79,248.05/x
  3. Step 3: Cross multiply
    135,818.45x = 187,441.31 × 79,248.05
  4. Step 4: Simplify right side
    135,818.45x = 14,854,357,567.86
  5. Step 5: Solve for x
    x = 14,854,357,567.86/135,818.45
  6. Step 6: Final answer
    x = 109,369.22

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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.