Home / 138,669.08-208,030.59-53,273.72

Finding the Fourth Proportional to 138,669.08, 208,030.59 and 53,273.72

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Solution

The fourth proportional to 138,669.08, 208,030.59 and 53,273.72 is: 79,920.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,669.08 : 208,030.59 = 53,273.72 : x
  2. Step 2: Convert to fraction form
    138,669.08/208,030.59 = 53,273.72/x
  3. Step 3: Cross multiply
    138,669.08x = 208,030.59 × 53,273.72
  4. Step 4: Simplify right side
    138,669.08x = 11,082,562,362.94
  5. Step 5: Solve for x
    x = 11,082,562,362.94/138,669.08
  6. Step 6: Final answer
    x = 79,920.93

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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.