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Finding the Fourth Proportional to 152,704.42, 210,724.99 and 84,720.67

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Solution

The fourth proportional to 152,704.42, 210,724.99 and 84,720.67 is: 116,910.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,704.42 : 210,724.99 = 84,720.67 : x
  2. Step 2: Convert to fraction form
    152,704.42/210,724.99 = 84,720.67/x
  3. Step 3: Cross multiply
    152,704.42x = 210,724.99 × 84,720.67
  4. Step 4: Simplify right side
    152,704.42x = 17,852,761,599.93
  5. Step 5: Solve for x
    x = 17,852,761,599.93/152,704.42
  6. Step 6: Final answer
    x = 116,910.58

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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.