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Finding the Fourth Proportional to 144,859.90, 217,296.58 and 74,875.90

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Solution

The fourth proportional to 144,859.90, 217,296.58 and 74,875.90 is: 112,317.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,859.90 : 217,296.58 = 74,875.90 : x
  2. Step 2: Convert to fraction form
    144,859.90/217,296.58 = 74,875.90/x
  3. Step 3: Cross multiply
    144,859.90x = 217,296.58 × 74,875.90
  4. Step 4: Simplify right side
    144,859.90x = 16,270,276,994.42
  5. Step 5: Solve for x
    x = 16,270,276,994.42/144,859.90
  6. Step 6: Final answer
    x = 112,317.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.