Home / 115,777.36-159,781.34-64,795.20

Finding the Fourth Proportional to 115,777.36, 159,781.34 and 64,795.20

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Solution

The fourth proportional to 115,777.36, 159,781.34 and 64,795.20 is: 89,422.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,777.36 : 159,781.34 = 64,795.20 : x
  2. Step 2: Convert to fraction form
    115,777.36/159,781.34 = 64,795.20/x
  3. Step 3: Cross multiply
    115,777.36x = 159,781.34 × 64,795.20
  4. Step 4: Simplify right side
    115,777.36x = 10,353,063,082.66
  5. Step 5: Solve for x
    x = 10,353,063,082.66/115,777.36
  6. Step 6: Final answer
    x = 89,422.17

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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.