Home / 151,455.13-209,008.89-86,919.22

Finding the Fourth Proportional to 151,455.13, 209,008.89 and 86,919.22

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Solution

The fourth proportional to 151,455.13, 209,008.89 and 86,919.22 is: 119,948.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,455.13 : 209,008.89 = 86,919.22 : x
  2. Step 2: Convert to fraction form
    151,455.13/209,008.89 = 86,919.22/x
  3. Step 3: Cross multiply
    151,455.13x = 209,008.89 × 86,919.22
  4. Step 4: Simplify right side
    151,455.13x = 18,166,889,953.13
  5. Step 5: Solve for x
    x = 18,166,889,953.13/151,455.13
  6. Step 6: Final answer
    x = 119,948.99

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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.