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Finding the Fourth Proportional to 223,737.49, 308,755.65 and 121,763.08

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Solution

The fourth proportional to 223,737.49, 308,755.65 and 121,763.08 is: 168,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,737.49 : 308,755.65 = 121,763.08 : x
  2. Step 2: Convert to fraction form
    223,737.49/308,755.65 = 121,763.08/x
  3. Step 3: Cross multiply
    223,737.49x = 308,755.65 × 121,763.08
  4. Step 4: Simplify right side
    223,737.49x = 37,595,038,139.51
  5. Step 5: Solve for x
    x = 37,595,038,139.51/223,737.49
  6. Step 6: Final answer
    x = 168,031.91

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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.