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Finding the Fourth Proportional to 153,484.05, 211,814.52 and 85,500.94

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Solution

The fourth proportional to 153,484.05, 211,814.52 and 85,500.94 is: 117,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,484.05 : 211,814.52 = 85,500.94 : x
  2. Step 2: Convert to fraction form
    153,484.05/211,814.52 = 85,500.94/x
  3. Step 3: Cross multiply
    153,484.05x = 211,814.52 × 85,500.94
  4. Step 4: Simplify right side
    153,484.05x = 18,110,340,138.14
  5. Step 5: Solve for x
    x = 18,110,340,138.14/153,484.05
  6. Step 6: Final answer
    x = 117,994.93

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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.