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Finding the Fourth Proportional to 152,500.50, 210,450.78 and 85,432.50

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Solution

The fourth proportional to 152,500.50, 210,450.78 and 85,432.50 is: 117,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,500.50 : 210,450.78 = 85,432.50 : x
  2. Step 2: Convert to fraction form
    152,500.50/210,450.78 = 85,432.50/x
  3. Step 3: Cross multiply
    152,500.50x = 210,450.78 × 85,432.50
  4. Step 4: Simplify right side
    152,500.50x = 17,979,336,262.35
  5. Step 5: Solve for x
    x = 17,979,336,262.35/152,500.50
  6. Step 6: Final answer
    x = 117,896.90

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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.