Home / 166,139.40-249,266.70-72,712.20

Finding the Fourth Proportional to 166,139.40, 249,266.70 and 72,712.20

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Solution

The fourth proportional to 166,139.40, 249,266.70 and 72,712.20 is: 109,093.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,139.40 : 249,266.70 = 72,712.20 : x
  2. Step 2: Convert to fraction form
    166,139.40/249,266.70 = 72,712.20/x
  3. Step 3: Cross multiply
    166,139.40x = 249,266.70 × 72,712.20
  4. Step 4: Simplify right side
    166,139.40x = 18,124,730,143.74
  5. Step 5: Solve for x
    x = 18,124,730,143.74/166,139.40
  6. Step 6: Final answer
    x = 109,093.51

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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.