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Finding the Fourth Proportional to 152,709.80, 210,516.72 and 107,251.52

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Solution

The fourth proportional to 152,709.80, 210,516.72 and 107,251.52 is: 147,850.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,709.80 : 210,516.72 = 107,251.52 : x
  2. Step 2: Convert to fraction form
    152,709.80/210,516.72 = 107,251.52/x
  3. Step 3: Cross multiply
    152,709.80x = 210,516.72 × 107,251.52
  4. Step 4: Simplify right side
    152,709.80x = 22,578,238,205.41
  5. Step 5: Solve for x
    x = 22,578,238,205.41/152,709.80
  6. Step 6: Final answer
    x = 147,850.62

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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.