Home / 145,941.56-201,274.78-100,691.72

Finding the Fourth Proportional to 145,941.56, 201,274.78 and 100,691.72

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Solution

The fourth proportional to 145,941.56, 201,274.78 and 100,691.72 is: 138,868.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,941.56 : 201,274.78 = 100,691.72 : x
  2. Step 2: Convert to fraction form
    145,941.56/201,274.78 = 100,691.72/x
  3. Step 3: Cross multiply
    145,941.56x = 201,274.78 × 100,691.72
  4. Step 4: Simplify right side
    145,941.56x = 20,266,703,790.82
  5. Step 5: Solve for x
    x = 20,266,703,790.82/145,941.56
  6. Step 6: Final answer
    x = 138,868.63

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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.