Home / 155,230.25-214,215.18-86,316.96

Finding the Fourth Proportional to 155,230.25, 214,215.18 and 86,316.96

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Solution

The fourth proportional to 155,230.25, 214,215.18 and 86,316.96 is: 119,115.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,230.25 : 214,215.18 = 86,316.96 : x
  2. Step 2: Convert to fraction form
    155,230.25/214,215.18 = 86,316.96/x
  3. Step 3: Cross multiply
    155,230.25x = 214,215.18 × 86,316.96
  4. Step 4: Simplify right side
    155,230.25x = 18,490,403,123.45
  5. Step 5: Solve for x
    x = 18,490,403,123.45/155,230.25
  6. Step 6: Final answer
    x = 119,115.98

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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.