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Finding the Fourth Proportional to 153,223.52, 211,443.48 and 85,238.60

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Solution

The fourth proportional to 153,223.52, 211,443.48 and 85,238.60 is: 117,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,223.52 : 211,443.48 = 85,238.60 : x
  2. Step 2: Convert to fraction form
    153,223.52/211,443.48 = 85,238.60/x
  3. Step 3: Cross multiply
    153,223.52x = 211,443.48 × 85,238.60
  4. Step 4: Simplify right side
    153,223.52x = 18,023,145,157.11
  5. Step 5: Solve for x
    x = 18,023,145,157.11/153,223.52
  6. Step 6: Final answer
    x = 117,626.50

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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.