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Finding the Fourth Proportional to 102,922.90, 154,384.35 and 69,658.90

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Solution

The fourth proportional to 102,922.90, 154,384.35 and 69,658.90 is: 104,488.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,922.90 : 154,384.35 = 69,658.90 : x
  2. Step 2: Convert to fraction form
    102,922.90/154,384.35 = 69,658.90/x
  3. Step 3: Cross multiply
    102,922.90x = 154,384.35 × 69,658.90
  4. Step 4: Simplify right side
    102,922.90x = 10,754,243,998.22
  5. Step 5: Solve for x
    x = 10,754,243,998.22/102,922.90
  6. Step 6: Final answer
    x = 104,488.35

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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.