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Finding the Fourth Proportional to 167,459.51, 231,093.20 and 90,978.00

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Solution

The fourth proportional to 167,459.51, 231,093.20 and 90,978.00 is: 125,549.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,459.51 : 231,093.20 = 90,978.00 : x
  2. Step 2: Convert to fraction form
    167,459.51/231,093.20 = 90,978.00/x
  3. Step 3: Cross multiply
    167,459.51x = 231,093.20 × 90,978.00
  4. Step 4: Simplify right side
    167,459.51x = 21,024,396,510.45
  5. Step 5: Solve for x
    x = 21,024,396,510.45/167,459.51
  6. Step 6: Final answer
    x = 125,549.13

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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.