Home / 166,128.20-249,278.70-72,643.40

Finding the Fourth Proportional to 166,128.20, 249,278.70 and 72,643.40

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Solution

The fourth proportional to 166,128.20, 249,278.70 and 72,643.40 is: 109,002.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,128.20 : 249,278.70 = 72,643.40 : x
  2. Step 2: Convert to fraction form
    166,128.20/249,278.70 = 72,643.40/x
  3. Step 3: Cross multiply
    166,128.20x = 249,278.70 × 72,643.40
  4. Step 4: Simplify right side
    166,128.20x = 18,108,452,315.58
  5. Step 5: Solve for x
    x = 18,108,452,315.58/166,128.20
  6. Step 6: Final answer
    x = 109,002.88

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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.