Home / 159,530.36-220,154.52-87,909.36

Finding the Fourth Proportional to 159,530.36, 220,154.52 and 87,909.36

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Solution

The fourth proportional to 159,530.36, 220,154.52 and 87,909.36 is: 121,316.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,530.36 : 220,154.52 = 87,909.36 : x
  2. Step 2: Convert to fraction form
    159,530.36/220,154.52 = 87,909.36/x
  3. Step 3: Cross multiply
    159,530.36x = 220,154.52 × 87,909.36
  4. Step 4: Simplify right side
    159,530.36x = 19,353,642,954.31
  5. Step 5: Solve for x
    x = 19,353,642,954.31/159,530.36
  6. Step 6: Final answer
    x = 121,316.36

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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.