Home / 166,109.40-249,200.55-81,909.90

Finding the Fourth Proportional to 166,109.40, 249,200.55 and 81,909.90

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Solution

The fourth proportional to 166,109.40, 249,200.55 and 81,909.90 is: 122,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,109.40 : 249,200.55 = 81,909.90 : x
  2. Step 2: Convert to fraction form
    166,109.40/249,200.55 = 81,909.90/x
  3. Step 3: Cross multiply
    166,109.40x = 249,200.55 × 81,909.90
  4. Step 4: Simplify right side
    166,109.40x = 20,411,992,130.45
  5. Step 5: Solve for x
    x = 20,411,992,130.45/166,109.40
  6. Step 6: Final answer
    x = 122,882.82

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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.