Home / 105,140.73-145,091.91-57,394.89

Finding the Fourth Proportional to 105,140.73, 145,091.91 and 57,394.89

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Solution

The fourth proportional to 105,140.73, 145,091.91 and 57,394.89 is: 79,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,140.73 : 145,091.91 = 57,394.89 : x
  2. Step 2: Convert to fraction form
    105,140.73/145,091.91 = 57,394.89/x
  3. Step 3: Cross multiply
    105,140.73x = 145,091.91 × 57,394.89
  4. Step 4: Simplify right side
    105,140.73x = 8,327,534,214.34
  5. Step 5: Solve for x
    x = 8,327,534,214.34/105,140.73
  6. Step 6: Final answer
    x = 79,203.69

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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.