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Finding the Fourth Proportional to 167,421.66, 231,043.80 and 90,941.46

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Solution

The fourth proportional to 167,421.66, 231,043.80 and 90,941.46 is: 125,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,421.66 : 231,043.80 = 90,941.46 : x
  2. Step 2: Convert to fraction form
    167,421.66/231,043.80 = 90,941.46/x
  3. Step 3: Cross multiply
    167,421.66x = 231,043.80 × 90,941.46
  4. Step 4: Simplify right side
    167,421.66x = 21,011,460,495.95
  5. Step 5: Solve for x
    x = 21,011,460,495.95/167,421.66
  6. Step 6: Final answer
    x = 125,500.25

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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.