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Finding the Fourth Proportional to 154,299.98, 212,923.92 and 86,305.16

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Solution

The fourth proportional to 154,299.98, 212,923.92 and 86,305.16 is: 119,095.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,299.98 : 212,923.92 = 86,305.16 : x
  2. Step 2: Convert to fraction form
    154,299.98/212,923.92 = 86,305.16/x
  3. Step 3: Cross multiply
    154,299.98x = 212,923.92 × 86,305.16
  4. Step 4: Simplify right side
    154,299.98x = 18,376,432,983.43
  5. Step 5: Solve for x
    x = 18,376,432,983.43/154,299.98
  6. Step 6: Final answer
    x = 119,095.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.