Home / 123,031.08-169,782.89-66,442.45

Finding the Fourth Proportional to 123,031.08, 169,782.89 and 66,442.45

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Solution

The fourth proportional to 123,031.08, 169,782.89 and 66,442.45 is: 91,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,031.08 : 169,782.89 = 66,442.45 : x
  2. Step 2: Convert to fraction form
    123,031.08/169,782.89 = 66,442.45/x
  3. Step 3: Cross multiply
    123,031.08x = 169,782.89 × 66,442.45
  4. Step 4: Simplify right side
    123,031.08x = 11,280,791,179.68
  5. Step 5: Solve for x
    x = 11,280,791,179.68/123,031.08
  6. Step 6: Final answer
    x = 91,690.58

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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.