Home / 166,025.60-249,111.30-87,121.37

Finding the Fourth Proportional to 166,025.60, 249,111.30 and 87,121.37

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Solution

The fourth proportional to 166,025.60, 249,111.30 and 87,121.37 is: 130,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,025.60 : 249,111.30 = 87,121.37 : x
  2. Step 2: Convert to fraction form
    166,025.60/249,111.30 = 87,121.37/x
  3. Step 3: Cross multiply
    166,025.60x = 249,111.30 × 87,121.37
  4. Step 4: Simplify right side
    166,025.60x = 21,702,918,197.91
  5. Step 5: Solve for x
    x = 21,702,918,197.91/166,025.60
  6. Step 6: Final answer
    x = 130,720.31

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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.