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Finding the Fourth Proportional to 100,007.60, 149,838.60 and 84,455.60

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Solution

The fourth proportional to 100,007.60, 149,838.60 and 84,455.60 is: 126,537.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,007.60 : 149,838.60 = 84,455.60 : x
  2. Step 2: Convert to fraction form
    100,007.60/149,838.60 = 84,455.60/x
  3. Step 3: Cross multiply
    100,007.60x = 149,838.60 × 84,455.60
  4. Step 4: Simplify right side
    100,007.60x = 12,654,708,866.16
  5. Step 5: Solve for x
    x = 12,654,708,866.16/100,007.60
  6. Step 6: Final answer
    x = 126,537.47

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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.