Home / 123,870.30-170,940.78-67,281.54

Finding the Fourth Proportional to 123,870.30, 170,940.78 and 67,281.54

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Solution

The fourth proportional to 123,870.30, 170,940.78 and 67,281.54 is: 92,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,870.30 : 170,940.78 = 67,281.54 : x
  2. Step 2: Convert to fraction form
    123,870.30/170,940.78 = 67,281.54/x
  3. Step 3: Cross multiply
    123,870.30x = 170,940.78 × 67,281.54
  4. Step 4: Simplify right side
    123,870.30x = 11,501,158,927.20
  5. Step 5: Solve for x
    x = 11,501,158,927.20/123,870.30
  6. Step 6: Final answer
    x = 92,848.40

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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.