Home / 115,864.16-159,906-70,568.72

Finding the Fourth Proportional to 115,864.16, 159,906 and 70,568.72

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Solution

The fourth proportional to 115,864.16, 159,906 and 70,568.72 is: 97,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,864.16 : 159,906 = 70,568.72 : x
  2. Step 2: Convert to fraction form
    115,864.16/159,906 = 70,568.72/x
  3. Step 3: Cross multiply
    115,864.16x = 159,906 × 70,568.72
  4. Step 4: Simplify right side
    115,864.16x = 11,284,361,740.32
  5. Step 5: Solve for x
    x = 11,284,361,740.32/115,864.16
  6. Step 6: Final answer
    x = 97,393.03

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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.