Home / 166,156.96-249,270-72,637.60

Finding the Fourth Proportional to 166,156.96, 249,270 and 72,637.60

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Solution

The fourth proportional to 166,156.96, 249,270 and 72,637.60 is: 108,971.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,156.96 : 249,270 = 72,637.60 : x
  2. Step 2: Convert to fraction form
    166,156.96/249,270 = 72,637.60/x
  3. Step 3: Cross multiply
    166,156.96x = 249,270 × 72,637.60
  4. Step 4: Simplify right side
    166,156.96x = 18,106,374,552
  5. Step 5: Solve for x
    x = 18,106,374,552/166,156.96
  6. Step 6: Final answer
    x = 108,971.51

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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.