Home / 143,309.12-214,963.40-38,128.08

Finding the Fourth Proportional to 143,309.12, 214,963.40 and 38,128.08

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Solution

The fourth proportional to 143,309.12, 214,963.40 and 38,128.08 is: 57,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,309.12 : 214,963.40 = 38,128.08 : x
  2. Step 2: Convert to fraction form
    143,309.12/214,963.40 = 38,128.08/x
  3. Step 3: Cross multiply
    143,309.12x = 214,963.40 × 38,128.08
  4. Step 4: Simplify right side
    143,309.12x = 8,196,141,521.63
  5. Step 5: Solve for x
    x = 8,196,141,521.63/143,309.12
  6. Step 6: Final answer
    x = 57,192.05

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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.