Home / 138,615.08-191,288.12-84,148.26

Finding the Fourth Proportional to 138,615.08, 191,288.12 and 84,148.26

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Solution

The fourth proportional to 138,615.08, 191,288.12 and 84,148.26 is: 116,124.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,615.08 : 191,288.12 = 84,148.26 : x
  2. Step 2: Convert to fraction form
    138,615.08/191,288.12 = 84,148.26/x
  3. Step 3: Cross multiply
    138,615.08x = 191,288.12 × 84,148.26
  4. Step 4: Simplify right side
    138,615.08x = 16,096,562,456.67
  5. Step 5: Solve for x
    x = 16,096,562,456.67/138,615.08
  6. Step 6: Final answer
    x = 116,124.18

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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.