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Finding the Fourth Proportional to 101,065.20, 139,527 and 70,076.40

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Solution

The fourth proportional to 101,065.20, 139,527 and 70,076.40 is: 96,744.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,065.20 : 139,527 = 70,076.40 : x
  2. Step 2: Convert to fraction form
    101,065.20/139,527 = 70,076.40/x
  3. Step 3: Cross multiply
    101,065.20x = 139,527 × 70,076.40
  4. Step 4: Simplify right side
    101,065.20x = 9,777,549,862.80
  5. Step 5: Solve for x
    x = 9,777,549,862.80/101,065.20
  6. Step 6: Final answer
    x = 96,744.97

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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.