Home / 100,923.02-138,265.18-97,139.42

Finding the Fourth Proportional to 100,923.02, 138,265.18 and 97,139.42

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Solution

The fourth proportional to 100,923.02, 138,265.18 and 97,139.42 is: 133,081.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,923.02 : 138,265.18 = 97,139.42 : x
  2. Step 2: Convert to fraction form
    100,923.02/138,265.18 = 97,139.42/x
  3. Step 3: Cross multiply
    100,923.02x = 138,265.18 × 97,139.42
  4. Step 4: Simplify right side
    100,923.02x = 13,430,999,391.40
  5. Step 5: Solve for x
    x = 13,430,999,391.40/100,923.02
  6. Step 6: Final answer
    x = 133,081.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.