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Finding the Fourth Proportional to 153,910.40, 230,865.60 and 70,804.40

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Solution

The fourth proportional to 153,910.40, 230,865.60 and 70,804.40 is: 106,206.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,910.40 : 230,865.60 = 70,804.40 : x
  2. Step 2: Convert to fraction form
    153,910.40/230,865.60 = 70,804.40/x
  3. Step 3: Cross multiply
    153,910.40x = 230,865.60 × 70,804.40
  4. Step 4: Simplify right side
    153,910.40x = 16,346,300,288.64
  5. Step 5: Solve for x
    x = 16,346,300,288.64/153,910.40
  6. Step 6: Final answer
    x = 106,206.60

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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.