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Finding the Fourth Proportional to 188,758.70, 260,486.85 and 103,875.76

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Solution

The fourth proportional to 188,758.70, 260,486.85 and 103,875.76 is: 143,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,758.70 : 260,486.85 = 103,875.76 : x
  2. Step 2: Convert to fraction form
    188,758.70/260,486.85 = 103,875.76/x
  3. Step 3: Cross multiply
    188,758.70x = 260,486.85 × 103,875.76
  4. Step 4: Simplify right side
    188,758.70x = 27,058,270,228.90
  5. Step 5: Solve for x
    x = 27,058,270,228.90/188,758.70
  6. Step 6: Final answer
    x = 143,348.47

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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.