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Finding the Fourth Proportional to 110,115.90, 151,937.91 and 76,070.79

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Solution

The fourth proportional to 110,115.90, 151,937.91 and 76,070.79 is: 104,962.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,115.90 : 151,937.91 = 76,070.79 : x
  2. Step 2: Convert to fraction form
    110,115.90/151,937.91 = 76,070.79/x
  3. Step 3: Cross multiply
    110,115.90x = 151,937.91 × 76,070.79
  4. Step 4: Simplify right side
    110,115.90x = 11,558,036,844.65
  5. Step 5: Solve for x
    x = 11,558,036,844.65/110,115.90
  6. Step 6: Final answer
    x = 104,962.47

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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.