Home / 102,686.06-141,692.78-57,358.28

Finding the Fourth Proportional to 102,686.06, 141,692.78 and 57,358.28

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Solution

The fourth proportional to 102,686.06, 141,692.78 and 57,358.28 is: 79,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,686.06 : 141,692.78 = 57,358.28 : x
  2. Step 2: Convert to fraction form
    102,686.06/141,692.78 = 57,358.28/x
  3. Step 3: Cross multiply
    102,686.06x = 141,692.78 × 57,358.28
  4. Step 4: Simplify right side
    102,686.06x = 8,127,254,149.22
  5. Step 5: Solve for x
    x = 8,127,254,149.22/102,686.06
  6. Step 6: Final answer
    x = 79,146.62

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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.