Home / 103,375.65-142,496.76-86,435.97

Finding the Fourth Proportional to 103,375.65, 142,496.76 and 86,435.97

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Solution

The fourth proportional to 103,375.65, 142,496.76 and 86,435.97 is: 119,146.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,375.65 : 142,496.76 = 86,435.97 : x
  2. Step 2: Convert to fraction form
    103,375.65/142,496.76 = 86,435.97/x
  3. Step 3: Cross multiply
    103,375.65x = 142,496.76 × 86,435.97
  4. Step 4: Simplify right side
    103,375.65x = 12,316,845,672.46
  5. Step 5: Solve for x
    x = 12,316,845,672.46/103,375.65
  6. Step 6: Final answer
    x = 119,146.49

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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.