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Finding the Fourth Proportional to 154,033.91, 212,564.45 and 86,051.86

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Solution

The fourth proportional to 154,033.91, 212,564.45 and 86,051.86 is: 118,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,033.91 : 212,564.45 = 86,051.86 : x
  2. Step 2: Convert to fraction form
    154,033.91/212,564.45 = 86,051.86/x
  3. Step 3: Cross multiply
    154,033.91x = 212,564.45 × 86,051.86
  4. Step 4: Simplify right side
    154,033.91x = 18,291,566,292.38
  5. Step 5: Solve for x
    x = 18,291,566,292.38/154,033.91
  6. Step 6: Final answer
    x = 118,750.26

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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.