Home / 122,215.65-168,342.10-86,343.37

Finding the Fourth Proportional to 122,215.65, 168,342.10 and 86,343.37

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Solution

The fourth proportional to 122,215.65, 168,342.10 and 86,343.37 is: 118,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,215.65 : 168,342.10 = 86,343.37 : x
  2. Step 2: Convert to fraction form
    122,215.65/168,342.10 = 86,343.37/x
  3. Step 3: Cross multiply
    122,215.65x = 168,342.10 × 86,343.37
  4. Step 4: Simplify right side
    122,215.65x = 14,535,224,226.88
  5. Step 5: Solve for x
    x = 14,535,224,226.88/122,215.65
  6. Step 6: Final answer
    x = 118,930.96

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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.