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Finding the Fourth Proportional to 111,498.93, 153,996.23 and 73,428.65

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Solution

The fourth proportional to 111,498.93, 153,996.23 and 73,428.65 is: 101,415.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,498.93 : 153,996.23 = 73,428.65 : x
  2. Step 2: Convert to fraction form
    111,498.93/153,996.23 = 73,428.65/x
  3. Step 3: Cross multiply
    111,498.93x = 153,996.23 × 73,428.65
  4. Step 4: Simplify right side
    111,498.93x = 11,307,735,491.66
  5. Step 5: Solve for x
    x = 11,307,735,491.66/111,498.93
  6. Step 6: Final answer
    x = 101,415.64

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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.