Home / 105,331.72-145,358.29-57,585.07

Finding the Fourth Proportional to 105,331.72, 145,358.29 and 57,585.07

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Solution

The fourth proportional to 105,331.72, 145,358.29 and 57,585.07 is: 79,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,331.72 : 145,358.29 = 57,585.07 : x
  2. Step 2: Convert to fraction form
    105,331.72/145,358.29 = 57,585.07/x
  3. Step 3: Cross multiply
    105,331.72x = 145,358.29 × 57,585.07
  4. Step 4: Simplify right side
    105,331.72x = 8,370,467,304.73
  5. Step 5: Solve for x
    x = 8,370,467,304.73/105,331.72
  6. Step 6: Final answer
    x = 79,467.68

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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.