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Finding the Fourth Proportional to 103,686.10, 155,529.15 and 82,950.10

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Solution

The fourth proportional to 103,686.10, 155,529.15 and 82,950.10 is: 124,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,686.10 : 155,529.15 = 82,950.10 : x
  2. Step 2: Convert to fraction form
    103,686.10/155,529.15 = 82,950.10/x
  3. Step 3: Cross multiply
    103,686.10x = 155,529.15 × 82,950.10
  4. Step 4: Simplify right side
    103,686.10x = 12,901,158,545.42
  5. Step 5: Solve for x
    x = 12,901,158,545.42/103,686.10
  6. Step 6: Final answer
    x = 124,425.15

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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.