Home / 138,828.72-208,328.76-54,574.14

Finding the Fourth Proportional to 138,828.72, 208,328.76 and 54,574.14

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Solution

The fourth proportional to 138,828.72, 208,328.76 and 54,574.14 is: 81,894.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.72 : 208,328.76 = 54,574.14 : x
  2. Step 2: Convert to fraction form
    138,828.72/208,328.76 = 54,574.14/x
  3. Step 3: Cross multiply
    138,828.72x = 208,328.76 × 54,574.14
  4. Step 4: Simplify right side
    138,828.72x = 11,369,362,914.27
  5. Step 5: Solve for x
    x = 11,369,362,914.27/138,828.72
  6. Step 6: Final answer
    x = 81,894.89

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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.