Home / 123,031.16-169,782.98-66,442.53

Finding the Fourth Proportional to 123,031.16, 169,782.98 and 66,442.53

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Solution

The fourth proportional to 123,031.16, 169,782.98 and 66,442.53 is: 91,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,031.16 : 169,782.98 = 66,442.53 : x
  2. Step 2: Convert to fraction form
    123,031.16/169,782.98 = 66,442.53/x
  3. Step 3: Cross multiply
    123,031.16x = 169,782.98 × 66,442.53
  4. Step 4: Simplify right side
    123,031.16x = 11,280,810,409.93
  5. Step 5: Solve for x
    x = 11,280,810,409.93/123,031.16
  6. Step 6: Final answer
    x = 91,690.68

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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.