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Finding the Fourth Proportional to 111,396, 153,726.48 and 61,095.12

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Solution

The fourth proportional to 111,396, 153,726.48 and 61,095.12 is: 84,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,396 : 153,726.48 = 61,095.12 : x
  2. Step 2: Convert to fraction form
    111,396/153,726.48 = 61,095.12/x
  3. Step 3: Cross multiply
    111,396x = 153,726.48 × 61,095.12
  4. Step 4: Simplify right side
    111,396x = 9,391,937,742.78
  5. Step 5: Solve for x
    x = 9,391,937,742.78/111,396
  6. Step 6: Final answer
    x = 84,311.27

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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.