Home / 155,231.55-214,216.98-86,318.28

Finding the Fourth Proportional to 155,231.55, 214,216.98 and 86,318.28

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Solution

The fourth proportional to 155,231.55, 214,216.98 and 86,318.28 is: 119,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,231.55 : 214,216.98 = 86,318.28 : x
  2. Step 2: Convert to fraction form
    155,231.55/214,216.98 = 86,318.28/x
  3. Step 3: Cross multiply
    155,231.55x = 214,216.98 × 86,318.28
  4. Step 4: Simplify right side
    155,231.55x = 18,490,841,260.39
  5. Step 5: Solve for x
    x = 18,490,841,260.39/155,231.55
  6. Step 6: Final answer
    x = 119,117.80

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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.