Home / 105,215.61-145,201.77-57,470.97

Finding the Fourth Proportional to 105,215.61, 145,201.77 and 57,470.97

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Solution

The fourth proportional to 105,215.61, 145,201.77 and 57,470.97 is: 79,312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,215.61 : 145,201.77 = 57,470.97 : x
  2. Step 2: Convert to fraction form
    105,215.61/145,201.77 = 57,470.97/x
  3. Step 3: Cross multiply
    105,215.61x = 145,201.77 × 57,470.97
  4. Step 4: Simplify right side
    105,215.61x = 8,344,886,567.62
  5. Step 5: Solve for x
    x = 8,344,886,567.62/105,215.61
  6. Step 6: Final answer
    x = 79,312.25

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1.5x scale

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.