Home / 166,128.50-249,190.40-77,332.34

Finding the Fourth Proportional to 166,128.50, 249,190.40 and 77,332.34

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Solution

The fourth proportional to 166,128.50, 249,190.40 and 77,332.34 is: 115,997.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,128.50 : 249,190.40 = 77,332.34 : x
  2. Step 2: Convert to fraction form
    166,128.50/249,190.40 = 77,332.34/x
  3. Step 3: Cross multiply
    166,128.50x = 249,190.40 × 77,332.34
  4. Step 4: Simplify right side
    166,128.50x = 19,270,476,737.54
  5. Step 5: Solve for x
    x = 19,270,476,737.54/166,128.50
  6. Step 6: Final answer
    x = 115,997.42

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1.5x scale

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.