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Finding the Fourth Proportional to 166,422, 249,633 and 55,614

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Solution

The fourth proportional to 166,422, 249,633 and 55,614 is: 83,421

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,422 : 249,633 = 55,614 : x
  2. Step 2: Convert to fraction form
    166,422/249,633 = 55,614/x
  3. Step 3: Cross multiply
    166,422x = 249,633 × 55,614
  4. Step 4: Simplify right side
    166,422x = 13,883,089,662
  5. Step 5: Solve for x
    x = 13,883,089,662/166,422
  6. Step 6: Final answer
    x = 83,421

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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.