Home / 81,260.74-121,595.55-67,088.98

Finding the Fourth Proportional to 81,260.74, 121,595.55 and 67,088.98

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Solution

The fourth proportional to 81,260.74, 121,595.55 and 67,088.98 is: 100,389.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,260.74 : 121,595.55 = 67,088.98 : x
  2. Step 2: Convert to fraction form
    81,260.74/121,595.55 = 67,088.98/x
  3. Step 3: Cross multiply
    81,260.74x = 121,595.55 × 67,088.98
  4. Step 4: Simplify right side
    81,260.74x = 8,157,721,422.04
  5. Step 5: Solve for x
    x = 8,157,721,422.04/81,260.74
  6. Step 6: Final answer
    x = 100,389.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.