Home / 115,881.21-159,918.48-70,561.08

Finding the Fourth Proportional to 115,881.21, 159,918.48 and 70,561.08

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Solution

The fourth proportional to 115,881.21, 159,918.48 and 70,561.08 is: 97,375.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,881.21 : 159,918.48 = 70,561.08 : x
  2. Step 2: Convert to fraction form
    115,881.21/159,918.48 = 70,561.08/x
  3. Step 3: Cross multiply
    115,881.21x = 159,918.48 × 70,561.08
  4. Step 4: Simplify right side
    115,881.21x = 11,284,020,660.76
  5. Step 5: Solve for x
    x = 11,284,020,660.76/115,881.21
  6. Step 6: Final answer
    x = 97,375.76

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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.