Home / 103,336.20-155,004.30-98,415.45

Finding the Fourth Proportional to 103,336.20, 155,004.30 and 98,415.45

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Solution

The fourth proportional to 103,336.20, 155,004.30 and 98,415.45 is: 147,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,336.20 : 155,004.30 = 98,415.45 : x
  2. Step 2: Convert to fraction form
    103,336.20/155,004.30 = 98,415.45/x
  3. Step 3: Cross multiply
    103,336.20x = 155,004.30 × 98,415.45
  4. Step 4: Simplify right side
    103,336.20x = 15,254,817,936.44
  5. Step 5: Solve for x
    x = 15,254,817,936.44/103,336.20
  6. Step 6: Final answer
    x = 147,623.18

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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.