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Finding the Fourth Proportional to 118,404.14, 176,742.47 and 103,457.21

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Solution

The fourth proportional to 118,404.14, 176,742.47 and 103,457.21 is: 154,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,404.14 : 176,742.47 = 103,457.21 : x
  2. Step 2: Convert to fraction form
    118,404.14/176,742.47 = 103,457.21/x
  3. Step 3: Cross multiply
    118,404.14x = 176,742.47 × 103,457.21
  4. Step 4: Simplify right side
    118,404.14x = 18,285,282,209.64
  5. Step 5: Solve for x
    x = 18,285,282,209.64/118,404.14
  6. Step 6: Final answer
    x = 154,431.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.