Home / 155,242.70-214,252.79-86,339.16

Finding the Fourth Proportional to 155,242.70, 214,252.79 and 86,339.16

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Solution

The fourth proportional to 155,242.70, 214,252.79 and 86,339.16 is: 119,157.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,242.70 : 214,252.79 = 86,339.16 : x
  2. Step 2: Convert to fraction form
    155,242.70/214,252.79 = 86,339.16/x
  3. Step 3: Cross multiply
    155,242.70x = 214,252.79 × 86,339.16
  4. Step 4: Simplify right side
    155,242.70x = 18,498,405,484.56
  5. Step 5: Solve for x
    x = 18,498,405,484.56/155,242.70
  6. Step 6: Final answer
    x = 119,157.97

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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.