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Finding the Fourth Proportional to 166,415.40, 249,623.10 and 103,429.80

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Solution

The fourth proportional to 166,415.40, 249,623.10 and 103,429.80 is: 155,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,415.40 : 249,623.10 = 103,429.80 : x
  2. Step 2: Convert to fraction form
    166,415.40/249,623.10 = 103,429.80/x
  3. Step 3: Cross multiply
    166,415.40x = 249,623.10 × 103,429.80
  4. Step 4: Simplify right side
    166,415.40x = 25,818,467,308.38
  5. Step 5: Solve for x
    x = 25,818,467,308.38/166,415.40
  6. Step 6: Final answer
    x = 155,144.70

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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.