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Finding the Fourth Proportional to 147,805.71, 221,706.95 and 42,621.27

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Solution

The fourth proportional to 147,805.71, 221,706.95 and 42,621.27 is: 63,931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,805.71 : 221,706.95 = 42,621.27 : x
  2. Step 2: Convert to fraction form
    147,805.71/221,706.95 = 42,621.27/x
  3. Step 3: Cross multiply
    147,805.71x = 221,706.95 × 42,621.27
  4. Step 4: Simplify right side
    147,805.71x = 9,449,431,563.72
  5. Step 5: Solve for x
    x = 9,449,431,563.72/147,805.71
  6. Step 6: Final answer
    x = 63,931.44

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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.