Home / 115,416.16-159,279.11-64,431.72

Finding the Fourth Proportional to 115,416.16, 159,279.11 and 64,431.72

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Solution

The fourth proportional to 115,416.16, 159,279.11 and 64,431.72 is: 88,918.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,416.16 : 159,279.11 = 64,431.72 : x
  2. Step 2: Convert to fraction form
    115,416.16/159,279.11 = 64,431.72/x
  3. Step 3: Cross multiply
    115,416.16x = 159,279.11 × 64,431.72
  4. Step 4: Simplify right side
    115,416.16x = 10,262,626,936.83
  5. Step 5: Solve for x
    x = 10,262,626,936.83/115,416.16
  6. Step 6: Final answer
    x = 88,918.46

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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.