Home / 102,515.40-153,794.70-43,320.60

Finding the Fourth Proportional to 102,515.40, 153,794.70 and 43,320.60

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Solution

The fourth proportional to 102,515.40, 153,794.70 and 43,320.60 is: 64,990.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,515.40 : 153,794.70 = 43,320.60 : x
  2. Step 2: Convert to fraction form
    102,515.40/153,794.70 = 43,320.60/x
  3. Step 3: Cross multiply
    102,515.40x = 153,794.70 × 43,320.60
  4. Step 4: Simplify right side
    102,515.40x = 6,662,478,680.82
  5. Step 5: Solve for x
    x = 6,662,478,680.82/102,515.40
  6. Step 6: Final answer
    x = 64,990.03

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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.