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Finding the Fourth Proportional to 111,610.24, 153,978.51 and 63,838.06

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Solution

The fourth proportional to 111,610.24, 153,978.51 and 63,838.06 is: 88,071.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,610.24 : 153,978.51 = 63,838.06 : x
  2. Step 2: Convert to fraction form
    111,610.24/153,978.51 = 63,838.06/x
  3. Step 3: Cross multiply
    111,610.24x = 153,978.51 × 63,838.06
  4. Step 4: Simplify right side
    111,610.24x = 9,829,689,360.09
  5. Step 5: Solve for x
    x = 9,829,689,360.09/111,610.24
  6. Step 6: Final answer
    x = 88,071.57

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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.