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Finding the Fourth Proportional to 104,670.74, 144,429.80 and 64,391.06

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Solution

The fourth proportional to 104,670.74, 144,429.80 and 64,391.06 is: 88,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,670.74 : 144,429.80 = 64,391.06 : x
  2. Step 2: Convert to fraction form
    104,670.74/144,429.80 = 64,391.06/x
  3. Step 3: Cross multiply
    104,670.74x = 144,429.80 × 64,391.06
  4. Step 4: Simplify right side
    104,670.74x = 9,299,987,917.59
  5. Step 5: Solve for x
    x = 9,299,987,917.59/104,670.74
  6. Step 6: Final answer
    x = 88,849.93

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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.