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Finding the Fourth Proportional to 101,430.89, 139,927.46 and 65,632.42

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Solution

The fourth proportional to 101,430.89, 139,927.46 and 65,632.42 is: 90,542.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,430.89 : 139,927.46 = 65,632.42 : x
  2. Step 2: Convert to fraction form
    101,430.89/139,927.46 = 65,632.42/x
  3. Step 3: Cross multiply
    101,430.89x = 139,927.46 × 65,632.42
  4. Step 4: Simplify right side
    101,430.89x = 9,183,777,824.25
  5. Step 5: Solve for x
    x = 9,183,777,824.25/101,430.89
  6. Step 6: Final answer
    x = 90,542.22

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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.