Home / 153,272.12-211,515.68-85,295.28

Finding the Fourth Proportional to 153,272.12, 211,515.68 and 85,295.28

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Solution

The fourth proportional to 153,272.12, 211,515.68 and 85,295.28 is: 117,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,272.12 : 211,515.68 = 85,295.28 : x
  2. Step 2: Convert to fraction form
    153,272.12/211,515.68 = 85,295.28/x
  3. Step 3: Cross multiply
    153,272.12x = 211,515.68 × 85,295.28
  4. Step 4: Simplify right side
    153,272.12x = 18,041,289,149.99
  5. Step 5: Solve for x
    x = 18,041,289,149.99/153,272.12
  6. Step 6: Final answer
    x = 117,707.57

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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.