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Finding the Fourth Proportional to 152,969.70, 211,093.80 and 87,560.16

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Solution

The fourth proportional to 152,969.70, 211,093.80 and 87,560.16 is: 120,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,969.70 : 211,093.80 = 87,560.16 : x
  2. Step 2: Convert to fraction form
    152,969.70/211,093.80 = 87,560.16/x
  3. Step 3: Cross multiply
    152,969.70x = 211,093.80 × 87,560.16
  4. Step 4: Simplify right side
    152,969.70x = 18,483,406,903.01
  5. Step 5: Solve for x
    x = 18,483,406,903.01/152,969.70
  6. Step 6: Final answer
    x = 120,830.51

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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.