Home / 159,531.93-220,155.53-87,914.51

Finding the Fourth Proportional to 159,531.93, 220,155.53 and 87,914.51

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Solution

The fourth proportional to 159,531.93, 220,155.53 and 87,914.51 is: 121,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,531.93 : 220,155.53 = 87,914.51 : x
  2. Step 2: Convert to fraction form
    159,531.93/220,155.53 = 87,914.51/x
  3. Step 3: Cross multiply
    159,531.93x = 220,155.53 × 87,914.51
  4. Step 4: Simplify right side
    159,531.93x = 19,354,865,543.74
  5. Step 5: Solve for x
    x = 19,354,865,543.74/159,531.93
  6. Step 6: Final answer
    x = 121,322.83

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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.