Home / 115,128.07-158,888.42-64,149.10

Finding the Fourth Proportional to 115,128.07, 158,888.42 and 64,149.10

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Solution

The fourth proportional to 115,128.07, 158,888.42 and 64,149.10 is: 88,532.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,128.07 : 158,888.42 = 64,149.10 : x
  2. Step 2: Convert to fraction form
    115,128.07/158,888.42 = 64,149.10/x
  3. Step 3: Cross multiply
    115,128.07x = 158,888.42 × 64,149.10
  4. Step 4: Simplify right side
    115,128.07x = 10,192,548,425.46
  5. Step 5: Solve for x
    x = 10,192,548,425.46/115,128.07
  6. Step 6: Final answer
    x = 88,532.26

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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.