Home / 104,987.72-144,879.36-64,717.76

Finding the Fourth Proportional to 104,987.72, 144,879.36 and 64,717.76

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Solution

The fourth proportional to 104,987.72, 144,879.36 and 64,717.76 is: 89,308.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,987.72 : 144,879.36 = 64,717.76 : x
  2. Step 2: Convert to fraction form
    104,987.72/144,879.36 = 64,717.76/x
  3. Step 3: Cross multiply
    104,987.72x = 144,879.36 × 64,717.76
  4. Step 4: Simplify right side
    104,987.72x = 9,376,267,649.43
  5. Step 5: Solve for x
    x = 9,376,267,649.43/104,987.72
  6. Step 6: Final answer
    x = 89,308.23

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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.