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Finding the Fourth Proportional to 166,426, 249,639 and 55,618

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Solution

The fourth proportional to 166,426, 249,639 and 55,618 is: 83,427

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,426 : 249,639 = 55,618 : x
  2. Step 2: Convert to fraction form
    166,426/249,639 = 55,618/x
  3. Step 3: Cross multiply
    166,426x = 249,639 × 55,618
  4. Step 4: Simplify right side
    166,426x = 13,884,421,902
  5. Step 5: Solve for x
    x = 13,884,421,902/166,426
  6. Step 6: Final answer
    x = 83,427

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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.