Home / 123,356.21-170,232.98-72,369.83

Finding the Fourth Proportional to 123,356.21, 170,232.98 and 72,369.83

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Solution

The fourth proportional to 123,356.21, 170,232.98 and 72,369.83 is: 99,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,356.21 : 170,232.98 = 72,369.83 : x
  2. Step 2: Convert to fraction form
    123,356.21/170,232.98 = 72,369.83/x
  3. Step 3: Cross multiply
    123,356.21x = 170,232.98 × 72,369.83
  4. Step 4: Simplify right side
    123,356.21x = 12,319,731,886.73
  5. Step 5: Solve for x
    x = 12,319,731,886.73/123,356.21
  6. Step 6: Final answer
    x = 99,871.20

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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.