Home / 115,209.63-158,991.03-64,220.94

Finding the Fourth Proportional to 115,209.63, 158,991.03 and 64,220.94

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Solution

The fourth proportional to 115,209.63, 158,991.03 and 64,220.94 is: 88,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,209.63 : 158,991.03 = 64,220.94 : x
  2. Step 2: Convert to fraction form
    115,209.63/158,991.03 = 64,220.94/x
  3. Step 3: Cross multiply
    115,209.63x = 158,991.03 × 64,220.94
  4. Step 4: Simplify right side
    115,209.63x = 10,210,553,398.17
  5. Step 5: Solve for x
    x = 10,210,553,398.17/115,209.63
  6. Step 6: Final answer
    x = 88,625.87

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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.