Home / 143,386.99-215,109.18-80,296.81

Finding the Fourth Proportional to 143,386.99, 215,109.18 and 80,296.81

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Solution

The fourth proportional to 143,386.99, 215,109.18 and 80,296.81 is: 120,461.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,386.99 : 215,109.18 = 80,296.81 : x
  2. Step 2: Convert to fraction form
    143,386.99/215,109.18 = 80,296.81/x
  3. Step 3: Cross multiply
    143,386.99x = 215,109.18 × 80,296.81
  4. Step 4: Simplify right side
    143,386.99x = 17,272,580,417.94
  5. Step 5: Solve for x
    x = 17,272,580,417.94/143,386.99
  6. Step 6: Final answer
    x = 120,461.28

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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.