Home / 101,680.20-140,327.08-56,372.40

Finding the Fourth Proportional to 101,680.20, 140,327.08 and 56,372.40

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Solution

The fourth proportional to 101,680.20, 140,327.08 and 56,372.40 is: 77,798.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,680.20 : 140,327.08 = 56,372.40 : x
  2. Step 2: Convert to fraction form
    101,680.20/140,327.08 = 56,372.40/x
  3. Step 3: Cross multiply
    101,680.20x = 140,327.08 × 56,372.40
  4. Step 4: Simplify right side
    101,680.20x = 7,910,574,284.59
  5. Step 5: Solve for x
    x = 7,910,574,284.59/101,680.20
  6. Step 6: Final answer
    x = 77,798.57

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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.