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Finding the Fourth Proportional to 159,571.71, 220,206.06 and 86,975.31

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Solution

The fourth proportional to 159,571.71, 220,206.06 and 86,975.31 is: 120,024.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,571.71 : 220,206.06 = 86,975.31 : x
  2. Step 2: Convert to fraction form
    159,571.71/220,206.06 = 86,975.31/x
  3. Step 3: Cross multiply
    159,571.71x = 220,206.06 × 86,975.31
  4. Step 4: Simplify right side
    159,571.71x = 19,152,490,332.38
  5. Step 5: Solve for x
    x = 19,152,490,332.38/159,571.71
  6. Step 6: Final answer
    x = 120,024.35

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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.