Home / 115,106.23-158,871.10-77,358.61

Finding the Fourth Proportional to 115,106.23, 158,871.10 and 77,358.61

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Solution

The fourth proportional to 115,106.23, 158,871.10 and 77,358.61 is: 106,771.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,106.23 : 158,871.10 = 77,358.61 : x
  2. Step 2: Convert to fraction form
    115,106.23/158,871.10 = 77,358.61/x
  3. Step 3: Cross multiply
    115,106.23x = 158,871.10 × 77,358.61
  4. Step 4: Simplify right side
    115,106.23x = 12,290,046,670.82
  5. Step 5: Solve for x
    x = 12,290,046,670.82/115,106.23
  6. Step 6: Final answer
    x = 106,771.35

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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.