Home / 97,665.40-146,811.30-90,731.80

Finding the Fourth Proportional to 97,665.40, 146,811.30 and 90,731.80

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Solution

The fourth proportional to 97,665.40, 146,811.30 and 90,731.80 is: 136,388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,665.40 : 146,811.30 = 90,731.80 : x
  2. Step 2: Convert to fraction form
    97,665.40/146,811.30 = 90,731.80/x
  3. Step 3: Cross multiply
    97,665.40x = 146,811.30 × 90,731.80
  4. Step 4: Simplify right side
    97,665.40x = 13,320,453,509.34
  5. Step 5: Solve for x
    x = 13,320,453,509.34/97,665.40
  6. Step 6: Final answer
    x = 136,388.66

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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.