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Finding the Fourth Proportional to 104,010.40, 156,015.60 and 86,295.70

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Solution

The fourth proportional to 104,010.40, 156,015.60 and 86,295.70 is: 129,443.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,010.40 : 156,015.60 = 86,295.70 : x
  2. Step 2: Convert to fraction form
    104,010.40/156,015.60 = 86,295.70/x
  3. Step 3: Cross multiply
    104,010.40x = 156,015.60 × 86,295.70
  4. Step 4: Simplify right side
    104,010.40x = 13,463,475,412.92
  5. Step 5: Solve for x
    x = 13,463,475,412.92/104,010.40
  6. Step 6: Final answer
    x = 129,443.55

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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.