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Finding the Fourth Proportional to 136,101.65, 187,820.10 and 75,670.38

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Solution

The fourth proportional to 136,101.65, 187,820.10 and 75,670.38 is: 104,425.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,101.65 : 187,820.10 = 75,670.38 : x
  2. Step 2: Convert to fraction form
    136,101.65/187,820.10 = 75,670.38/x
  3. Step 3: Cross multiply
    136,101.65x = 187,820.10 × 75,670.38
  4. Step 4: Simplify right side
    136,101.65x = 14,212,418,338.64
  5. Step 5: Solve for x
    x = 14,212,418,338.64/136,101.65
  6. Step 6: Final answer
    x = 104,425.03

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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.