Home / 101,928.65-140,656.77-56,609.55

Finding the Fourth Proportional to 101,928.65, 140,656.77 and 56,609.55

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Solution

The fourth proportional to 101,928.65, 140,656.77 and 56,609.55 is: 78,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,928.65 : 140,656.77 = 56,609.55 : x
  2. Step 2: Convert to fraction form
    101,928.65/140,656.77 = 56,609.55/x
  3. Step 3: Cross multiply
    101,928.65x = 140,656.77 × 56,609.55
  4. Step 4: Simplify right side
    101,928.65x = 7,962,516,454.15
  5. Step 5: Solve for x
    x = 7,962,516,454.15/101,928.65
  6. Step 6: Final answer
    x = 78,118.54

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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.