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Finding the Fourth Proportional to 158,547.80, 218,806.10 and 104,738.49

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Solution

The fourth proportional to 158,547.80, 218,806.10 and 104,738.49 is: 144,545.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,547.80 : 218,806.10 = 104,738.49 : x
  2. Step 2: Convert to fraction form
    158,547.80/218,806.10 = 104,738.49/x
  3. Step 3: Cross multiply
    158,547.80x = 218,806.10 × 104,738.49
  4. Step 4: Simplify right side
    158,547.80x = 22,917,420,516.79
  5. Step 5: Solve for x
    x = 22,917,420,516.79/158,547.80
  6. Step 6: Final answer
    x = 144,545.81

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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.