Home / 115,276.41-159,081.14-64,289.21

Finding the Fourth Proportional to 115,276.41, 159,081.14 and 64,289.21

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Solution

The fourth proportional to 115,276.41, 159,081.14 and 64,289.21 is: 88,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,276.41 : 159,081.14 = 64,289.21 : x
  2. Step 2: Convert to fraction form
    115,276.41/159,081.14 = 64,289.21/x
  3. Step 3: Cross multiply
    115,276.41x = 159,081.14 × 64,289.21
  4. Step 4: Simplify right side
    115,276.41x = 10,227,200,181.82
  5. Step 5: Solve for x
    x = 10,227,200,181.82/115,276.41
  6. Step 6: Final answer
    x = 88,718.93

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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.