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Finding the Fourth Proportional to 100,645.40, 151,259.70 and 98,895.80

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Solution

The fourth proportional to 100,645.40, 151,259.70 and 98,895.80 is: 148,630.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,645.40 : 151,259.70 = 98,895.80 : x
  2. Step 2: Convert to fraction form
    100,645.40/151,259.70 = 98,895.80/x
  3. Step 3: Cross multiply
    100,645.40x = 151,259.70 × 98,895.80
  4. Step 4: Simplify right side
    100,645.40x = 14,958,949,039.26
  5. Step 5: Solve for x
    x = 14,958,949,039.26/100,645.40
  6. Step 6: Final answer
    x = 148,630.23

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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.