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Finding the Fourth Proportional to 152,224.70, 210,069.78 and 85,156.70

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Solution

The fourth proportional to 152,224.70, 210,069.78 and 85,156.70 is: 117,516.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,224.70 : 210,069.78 = 85,156.70 : x
  2. Step 2: Convert to fraction form
    152,224.70/210,069.78 = 85,156.70/x
  3. Step 3: Cross multiply
    152,224.70x = 210,069.78 × 85,156.70
  4. Step 4: Simplify right side
    152,224.70x = 17,888,849,234.53
  5. Step 5: Solve for x
    x = 17,888,849,234.53/152,224.70
  6. Step 6: Final answer
    x = 117,516.07

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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.