Home / 103,428.30-155,142.45-92,274.60

Finding the Fourth Proportional to 103,428.30, 155,142.45 and 92,274.60

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Solution

The fourth proportional to 103,428.30, 155,142.45 and 92,274.60 is: 138,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428.30 : 155,142.45 = 92,274.60 : x
  2. Step 2: Convert to fraction form
    103,428.30/155,142.45 = 92,274.60/x
  3. Step 3: Cross multiply
    103,428.30x = 155,142.45 × 92,274.60
  4. Step 4: Simplify right side
    103,428.30x = 14,315,707,516.77
  5. Step 5: Solve for x
    x = 14,315,707,516.77/103,428.30
  6. Step 6: Final answer
    x = 138,411.90

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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.