Home / 100,584.13-138,814.41-64,848.55

Finding the Fourth Proportional to 100,584.13, 138,814.41 and 64,848.55

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Solution

The fourth proportional to 100,584.13, 138,814.41 and 64,848.55 is: 89,496.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,584.13 : 138,814.41 = 64,848.55 : x
  2. Step 2: Convert to fraction form
    100,584.13/138,814.41 = 64,848.55/x
  3. Step 3: Cross multiply
    100,584.13x = 138,814.41 × 64,848.55
  4. Step 4: Simplify right side
    100,584.13x = 9,001,913,207.61
  5. Step 5: Solve for x
    x = 9,001,913,207.61/100,584.13
  6. Step 6: Final answer
    x = 89,496.36

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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.