Home / 103,402.09-142,691.78-57,461.58

Finding the Fourth Proportional to 103,402.09, 142,691.78 and 57,461.58

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Solution

The fourth proportional to 103,402.09, 142,691.78 and 57,461.58 is: 79,295.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,402.09 : 142,691.78 = 57,461.58 : x
  2. Step 2: Convert to fraction form
    103,402.09/142,691.78 = 57,461.58/x
  3. Step 3: Cross multiply
    103,402.09x = 142,691.78 × 57,461.58
  4. Step 4: Simplify right side
    103,402.09x = 8,199,295,131.81
  5. Step 5: Solve for x
    x = 8,199,295,131.81/103,402.09
  6. Step 6: Final answer
    x = 79,295.26

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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.