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Finding the Fourth Proportional to 123,937.45, 171,064.80 and 70,254.49

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Solution

The fourth proportional to 123,937.45, 171,064.80 and 70,254.49 is: 96,968.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,937.45 : 171,064.80 = 70,254.49 : x
  2. Step 2: Convert to fraction form
    123,937.45/171,064.80 = 70,254.49/x
  3. Step 3: Cross multiply
    123,937.45x = 171,064.80 × 70,254.49
  4. Step 4: Simplify right side
    123,937.45x = 12,018,070,280.95
  5. Step 5: Solve for x
    x = 12,018,070,280.95/123,937.45
  6. Step 6: Final answer
    x = 96,968.84

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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.