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Finding the Fourth Proportional to 153,380.64, 211,663.28 and 88,858.67

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Solution

The fourth proportional to 153,380.64, 211,663.28 and 88,858.67 is: 122,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,380.64 : 211,663.28 = 88,858.67 : x
  2. Step 2: Convert to fraction form
    153,380.64/211,663.28 = 88,858.67/x
  3. Step 3: Cross multiply
    153,380.64x = 211,663.28 × 88,858.67
  4. Step 4: Simplify right side
    153,380.64x = 18,808,117,104.34
  5. Step 5: Solve for x
    x = 18,808,117,104.34/153,380.64
  6. Step 6: Final answer
    x = 122,623.80

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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.