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Finding the Fourth Proportional to 111,487.56, 153,980.58 and 73,417.28

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Solution

The fourth proportional to 111,487.56, 153,980.58 and 73,417.28 is: 101,399.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,487.56 : 153,980.58 = 73,417.28 : x
  2. Step 2: Convert to fraction form
    111,487.56/153,980.58 = 73,417.28/x
  3. Step 3: Cross multiply
    111,487.56x = 153,980.58 × 73,417.28
  4. Step 4: Simplify right side
    111,487.56x = 11,304,835,356.42
  5. Step 5: Solve for x
    x = 11,304,835,356.42/111,487.56
  6. Step 6: Final answer
    x = 101,399.97

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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.