Home / 100,058.40-138,083.88-57,037.13

Finding the Fourth Proportional to 100,058.40, 138,083.88 and 57,037.13

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Solution

The fourth proportional to 100,058.40, 138,083.88 and 57,037.13 is: 78,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,058.40 : 138,083.88 = 57,037.13 : x
  2. Step 2: Convert to fraction form
    100,058.40/138,083.88 = 57,037.13/x
  3. Step 3: Cross multiply
    100,058.40x = 138,083.88 × 57,037.13
  4. Step 4: Simplify right side
    100,058.40x = 7,875,907,524.05
  5. Step 5: Solve for x
    x = 7,875,907,524.05/100,058.40
  6. Step 6: Final answer
    x = 78,713.11

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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.