Home / 101,621.76-140,238.14-56,909.76

Finding the Fourth Proportional to 101,621.76, 140,238.14 and 56,909.76

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Solution

The fourth proportional to 101,621.76, 140,238.14 and 56,909.76 is: 78,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,621.76 : 140,238.14 = 56,909.76 : x
  2. Step 2: Convert to fraction form
    101,621.76/140,238.14 = 56,909.76/x
  3. Step 3: Cross multiply
    101,621.76x = 140,238.14 × 56,909.76
  4. Step 4: Simplify right side
    101,621.76x = 7,980,918,890.25
  5. Step 5: Solve for x
    x = 7,980,918,890.25/101,621.76
  6. Step 6: Final answer
    x = 78,535.53

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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.