Home / 105,580.86-145,701.14-57,182.55

Finding the Fourth Proportional to 105,580.86, 145,701.14 and 57,182.55

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Solution

The fourth proportional to 105,580.86, 145,701.14 and 57,182.55 is: 78,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,580.86 : 145,701.14 = 57,182.55 : x
  2. Step 2: Convert to fraction form
    105,580.86/145,701.14 = 57,182.55/x
  3. Step 3: Cross multiply
    105,580.86x = 145,701.14 × 57,182.55
  4. Step 4: Simplify right side
    105,580.86x = 8,331,562,723.11
  5. Step 5: Solve for x
    x = 8,331,562,723.11/105,580.86
  6. Step 6: Final answer
    x = 78,911.68

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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.