Home / 115,859.22-159,899.16-70,563.78

Finding the Fourth Proportional to 115,859.22, 159,899.16 and 70,563.78

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Solution

The fourth proportional to 115,859.22, 159,899.16 and 70,563.78 is: 97,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,859.22 : 159,899.16 = 70,563.78 : x
  2. Step 2: Convert to fraction form
    115,859.22/159,899.16 = 70,563.78/x
  3. Step 3: Cross multiply
    115,859.22x = 159,899.16 × 70,563.78
  4. Step 4: Simplify right side
    115,859.22x = 11,283,089,148.42
  5. Step 5: Solve for x
    x = 11,283,089,148.42/115,859.22
  6. Step 6: Final answer
    x = 97,386.20

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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.