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Finding the Fourth Proportional to 111,424.50, 153,765.84 and 61,123.50

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Solution

The fourth proportional to 111,424.50, 153,765.84 and 61,123.50 is: 84,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,424.50 : 153,765.84 = 61,123.50 : x
  2. Step 2: Convert to fraction form
    111,424.50/153,765.84 = 61,123.50/x
  3. Step 3: Cross multiply
    111,424.50x = 153,765.84 × 61,123.50
  4. Step 4: Simplify right side
    111,424.50x = 9,398,706,321.24
  5. Step 5: Solve for x
    x = 9,398,706,321.24/111,424.50
  6. Step 6: Final answer
    x = 84,350.45

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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.