Home / 123,518.30-170,455.10-66,929.66

Finding the Fourth Proportional to 123,518.30, 170,455.10 and 66,929.66

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Solution

The fourth proportional to 123,518.30, 170,455.10 and 66,929.66 is: 92,362.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,518.30 : 170,455.10 = 66,929.66 : x
  2. Step 2: Convert to fraction form
    123,518.30/170,455.10 = 66,929.66/x
  3. Step 3: Cross multiply
    123,518.30x = 170,455.10 × 66,929.66
  4. Step 4: Simplify right side
    123,518.30x = 11,408,501,888.27
  5. Step 5: Solve for x
    x = 11,408,501,888.27/123,518.30
  6. Step 6: Final answer
    x = 92,362.85

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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.