Home / 103,127.78-142,304.93-57,186.27

Finding the Fourth Proportional to 103,127.78, 142,304.93 and 57,186.27

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Solution

The fourth proportional to 103,127.78, 142,304.93 and 57,186.27 is: 78,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,127.78 : 142,304.93 = 57,186.27 : x
  2. Step 2: Convert to fraction form
    103,127.78/142,304.93 = 57,186.27/x
  3. Step 3: Cross multiply
    103,127.78x = 142,304.93 × 57,186.27
  4. Step 4: Simplify right side
    103,127.78x = 8,137,887,863.38
  5. Step 5: Solve for x
    x = 8,137,887,863.38/103,127.78
  6. Step 6: Final answer
    x = 78,910.72

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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.