Home / 158,108.56-218,186.76-86,488.36

Finding the Fourth Proportional to 158,108.56, 218,186.76 and 86,488.36

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Solution

The fourth proportional to 158,108.56, 218,186.76 and 86,488.36 is: 119,352.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,108.56 : 218,186.76 = 86,488.36 : x
  2. Step 2: Convert to fraction form
    158,108.56/218,186.76 = 86,488.36/x
  3. Step 3: Cross multiply
    158,108.56x = 218,186.76 × 86,488.36
  4. Step 4: Simplify right side
    158,108.56x = 18,870,615,046.11
  5. Step 5: Solve for x
    x = 18,870,615,046.11/158,108.56
  6. Step 6: Final answer
    x = 119,352.27

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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.