Home / 135,672.10-187,239-75,262.21

Finding the Fourth Proportional to 135,672.10, 187,239 and 75,262.21

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Solution

The fourth proportional to 135,672.10, 187,239 and 75,262.21 is: 103,868.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,672.10 : 187,239 = 75,262.21 : x
  2. Step 2: Convert to fraction form
    135,672.10/187,239 = 75,262.21/x
  3. Step 3: Cross multiply
    135,672.10x = 187,239 × 75,262.21
  4. Step 4: Simplify right side
    135,672.10x = 14,092,020,938.19
  5. Step 5: Solve for x
    x = 14,092,020,938.19/135,672.10
  6. Step 6: Final answer
    x = 103,868.23

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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.