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Finding the Fourth Proportional to 140,221.72, 210,093.28 and 77,094.72

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Solution

The fourth proportional to 140,221.72, 210,093.28 and 77,094.72 is: 115,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,221.72 : 210,093.28 = 77,094.72 : x
  2. Step 2: Convert to fraction form
    140,221.72/210,093.28 = 77,094.72/x
  3. Step 3: Cross multiply
    140,221.72x = 210,093.28 × 77,094.72
  4. Step 4: Simplify right side
    140,221.72x = 16,197,082,595.48
  5. Step 5: Solve for x
    x = 16,197,082,595.48/140,221.72
  6. Step 6: Final answer
    x = 115,510.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.