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Finding the Fourth Proportional to 115,642.70, 159,593.02 and 70,313.18

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Solution

The fourth proportional to 115,642.70, 159,593.02 and 70,313.18 is: 97,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,642.70 : 159,593.02 = 70,313.18 : x
  2. Step 2: Convert to fraction form
    115,642.70/159,593.02 = 70,313.18/x
  3. Step 3: Cross multiply
    115,642.70x = 159,593.02 × 70,313.18
  4. Step 4: Simplify right side
    115,642.70x = 11,221,491,768.26
  5. Step 5: Solve for x
    x = 11,221,491,768.26/115,642.70
  6. Step 6: Final answer
    x = 97,035.89

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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.