Home / 105,077.72-145,007.19-57,331.46

Finding the Fourth Proportional to 105,077.72, 145,007.19 and 57,331.46

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Solution

The fourth proportional to 105,077.72, 145,007.19 and 57,331.46 is: 79,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,077.72 : 145,007.19 = 57,331.46 : x
  2. Step 2: Convert to fraction form
    105,077.72/145,007.19 = 57,331.46/x
  3. Step 3: Cross multiply
    105,077.72x = 145,007.19 × 57,331.46
  4. Step 4: Simplify right side
    105,077.72x = 8,313,473,188.16
  5. Step 5: Solve for x
    x = 8,313,473,188.16/105,077.72
  6. Step 6: Final answer
    x = 79,117.38

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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.