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Finding the Fourth Proportional to 171,764.70, 257,574.15 and 83,045.40

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Solution

The fourth proportional to 171,764.70, 257,574.15 and 83,045.40 is: 124,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,764.70 : 257,574.15 = 83,045.40 : x
  2. Step 2: Convert to fraction form
    171,764.70/257,574.15 = 83,045.40/x
  3. Step 3: Cross multiply
    171,764.70x = 257,574.15 × 83,045.40
  4. Step 4: Simplify right side
    171,764.70x = 21,390,348,316.41
  5. Step 5: Solve for x
    x = 21,390,348,316.41/171,764.70
  6. Step 6: Final answer
    x = 124,532.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.