Home / 100,278.40-138,347.58-59,993.32

Finding the Fourth Proportional to 100,278.40, 138,347.58 and 59,993.32

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Solution

The fourth proportional to 100,278.40, 138,347.58 and 59,993.32 is: 82,768.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.40 : 138,347.58 = 59,993.32 : x
  2. Step 2: Convert to fraction form
    100,278.40/138,347.58 = 59,993.32/x
  3. Step 3: Cross multiply
    100,278.40x = 138,347.58 × 59,993.32
  4. Step 4: Simplify right side
    100,278.40x = 8,299,930,638.17
  5. Step 5: Solve for x
    x = 8,299,930,638.17/100,278.40
  6. Step 6: Final answer
    x = 82,768.88

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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.