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Finding the Fourth Proportional to 118,018.85, 162,867.87 and 64,303.85

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Solution

The fourth proportional to 118,018.85, 162,867.87 and 64,303.85 is: 88,740.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,018.85 : 162,867.87 = 64,303.85 : x
  2. Step 2: Convert to fraction form
    118,018.85/162,867.87 = 64,303.85/x
  3. Step 3: Cross multiply
    118,018.85x = 162,867.87 × 64,303.85
  4. Step 4: Simplify right side
    118,018.85x = 10,473,031,082.30
  5. Step 5: Solve for x
    x = 10,473,031,082.30/118,018.85
  6. Step 6: Final answer
    x = 88,740.32

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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.