Home / 166,205.20-249,394.20-72,720.40

Finding the Fourth Proportional to 166,205.20, 249,394.20 and 72,720.40

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Solution

The fourth proportional to 166,205.20, 249,394.20 and 72,720.40 is: 109,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,205.20 : 249,394.20 = 72,720.40 : x
  2. Step 2: Convert to fraction form
    166,205.20/249,394.20 = 72,720.40/x
  3. Step 3: Cross multiply
    166,205.20x = 249,394.20 × 72,720.40
  4. Step 4: Simplify right side
    166,205.20x = 18,136,045,981.68
  5. Step 5: Solve for x
    x = 18,136,045,981.68/166,205.20
  6. Step 6: Final answer
    x = 109,118.40

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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.