Home / 209,359.13-314,053.71-87,657.20

Finding the Fourth Proportional to 209,359.13, 314,053.71 and 87,657.20

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Solution

The fourth proportional to 209,359.13, 314,053.71 and 87,657.20 is: 131,492.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,359.13 : 314,053.71 = 87,657.20 : x
  2. Step 2: Convert to fraction form
    209,359.13/314,053.71 = 87,657.20/x
  3. Step 3: Cross multiply
    209,359.13x = 314,053.71 × 87,657.20
  4. Step 4: Simplify right side
    209,359.13x = 27,529,067,297.94
  5. Step 5: Solve for x
    x = 27,529,067,297.94/209,359.13
  6. Step 6: Final answer
    x = 131,492.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.