Home / 166,142.40-249,271.20-72,715.20

Finding the Fourth Proportional to 166,142.40, 249,271.20 and 72,715.20

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Solution

The fourth proportional to 166,142.40, 249,271.20 and 72,715.20 is: 109,098.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,142.40 : 249,271.20 = 72,715.20 : x
  2. Step 2: Convert to fraction form
    166,142.40/249,271.20 = 72,715.20/x
  3. Step 3: Cross multiply
    166,142.40x = 249,271.20 × 72,715.20
  4. Step 4: Simplify right side
    166,142.40x = 18,125,805,162.24
  5. Step 5: Solve for x
    x = 18,125,805,162.24/166,142.40
  6. Step 6: Final answer
    x = 109,098.01

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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.