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Finding the Fourth Proportional to 103,300.20, 154,950.30 and 90,834.30

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Solution

The fourth proportional to 103,300.20, 154,950.30 and 90,834.30 is: 136,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,300.20 : 154,950.30 = 90,834.30 : x
  2. Step 2: Convert to fraction form
    103,300.20/154,950.30 = 90,834.30/x
  3. Step 3: Cross multiply
    103,300.20x = 154,950.30 × 90,834.30
  4. Step 4: Simplify right side
    103,300.20x = 14,074,802,035.29
  5. Step 5: Solve for x
    x = 14,074,802,035.29/103,300.20
  6. Step 6: Final answer
    x = 136,251.45

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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.