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Finding the Fourth Proportional to 187,891.92, 259,290.72 and 103,010.40

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Solution

The fourth proportional to 187,891.92, 259,290.72 and 103,010.40 is: 142,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,891.92 : 259,290.72 = 103,010.40 : x
  2. Step 2: Convert to fraction form
    187,891.92/259,290.72 = 103,010.40/x
  3. Step 3: Cross multiply
    187,891.92x = 259,290.72 × 103,010.40
  4. Step 4: Simplify right side
    187,891.92x = 26,709,640,783.49
  5. Step 5: Solve for x
    x = 26,709,640,783.49/187,891.92
  6. Step 6: Final answer
    x = 142,154.28

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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.