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Finding the Fourth Proportional to 99,313.82, 148,970.13 and 43,146.62

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Solution

The fourth proportional to 99,313.82, 148,970.13 and 43,146.62 is: 64,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,313.82 : 148,970.13 = 43,146.62 : x
  2. Step 2: Convert to fraction form
    99,313.82/148,970.13 = 43,146.62/x
  3. Step 3: Cross multiply
    99,313.82x = 148,970.13 × 43,146.62
  4. Step 4: Simplify right side
    99,313.82x = 6,427,557,590.46
  5. Step 5: Solve for x
    x = 6,427,557,590.46/99,313.82
  6. Step 6: Final answer
    x = 64,719.67

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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.