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Finding the Fourth Proportional to 153,059.76, 211,221.04 and 85,074.96

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Solution

The fourth proportional to 153,059.76, 211,221.04 and 85,074.96 is: 117,402.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,059.76 : 211,221.04 = 85,074.96 : x
  2. Step 2: Convert to fraction form
    153,059.76/211,221.04 = 85,074.96/x
  3. Step 3: Cross multiply
    153,059.76x = 211,221.04 × 85,074.96
  4. Step 4: Simplify right side
    153,059.76x = 17,969,621,529.16
  5. Step 5: Solve for x
    x = 17,969,621,529.16/153,059.76
  6. Step 6: Final answer
    x = 117,402.65

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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.