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Finding the Fourth Proportional to 101,155.67, 139,660.58 and 90,527.03

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Solution

The fourth proportional to 101,155.67, 139,660.58 and 90,527.03 is: 124,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,155.67 : 139,660.58 = 90,527.03 : x
  2. Step 2: Convert to fraction form
    101,155.67/139,660.58 = 90,527.03/x
  3. Step 3: Cross multiply
    101,155.67x = 139,660.58 × 90,527.03
  4. Step 4: Simplify right side
    101,155.67x = 12,643,057,515.48
  5. Step 5: Solve for x
    x = 12,643,057,515.48/101,155.67
  6. Step 6: Final answer
    x = 124,986.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.