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Finding the Fourth Proportional to 124,145, 171,290.22 and 73,159.80

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Solution

The fourth proportional to 124,145, 171,290.22 and 73,159.80 is: 100,942.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,145 : 171,290.22 = 73,159.80 : x
  2. Step 2: Convert to fraction form
    124,145/171,290.22 = 73,159.80/x
  3. Step 3: Cross multiply
    124,145x = 171,290.22 × 73,159.80
  4. Step 4: Simplify right side
    124,145x = 12,531,558,237.16
  5. Step 5: Solve for x
    x = 12,531,558,237.16/124,145
  6. Step 6: Final answer
    x = 100,942.92

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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.