Home / 101,761.32-140,431.78-56,440.20

Finding the Fourth Proportional to 101,761.32, 140,431.78 and 56,440.20

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Solution

The fourth proportional to 101,761.32, 140,431.78 and 56,440.20 is: 77,888.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,761.32 : 140,431.78 = 56,440.20 : x
  2. Step 2: Convert to fraction form
    101,761.32/140,431.78 = 56,440.20/x
  3. Step 3: Cross multiply
    101,761.32x = 140,431.78 × 56,440.20
  4. Step 4: Simplify right side
    101,761.32x = 7,925,997,749.56
  5. Step 5: Solve for x
    x = 7,925,997,749.56/101,761.32
  6. Step 6: Final answer
    x = 77,888.12

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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.