Home / 166,139.20-249,038.70-81,769.60

Finding the Fourth Proportional to 166,139.20, 249,038.70 and 81,769.60

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Solution

The fourth proportional to 166,139.20, 249,038.70 and 81,769.60 is: 122,570.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,139.20 : 249,038.70 = 81,769.60 : x
  2. Step 2: Convert to fraction form
    166,139.20/249,038.70 = 81,769.60/x
  3. Step 3: Cross multiply
    166,139.20x = 249,038.70 × 81,769.60
  4. Step 4: Simplify right side
    166,139.20x = 20,363,794,883.52
  5. Step 5: Solve for x
    x = 20,363,794,883.52/166,139.20
  6. Step 6: Final answer
    x = 122,570.68

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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.