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Finding the Fourth Proportional to 123,975, 171,064.34 and 70,248.92

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Solution

The fourth proportional to 123,975, 171,064.34 and 70,248.92 is: 96,931.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,975 : 171,064.34 = 70,248.92 : x
  2. Step 2: Convert to fraction form
    123,975/171,064.34 = 70,248.92/x
  3. Step 3: Cross multiply
    123,975x = 171,064.34 × 70,248.92
  4. Step 4: Simplify right side
    123,975x = 12,017,085,135.51
  5. Step 5: Solve for x
    x = 12,017,085,135.51/123,975
  6. Step 6: Final answer
    x = 96,931.52

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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.