Home / 115,636.15-159,519.43-77,397.30

Finding the Fourth Proportional to 115,636.15, 159,519.43 and 77,397.30

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Solution

The fourth proportional to 115,636.15, 159,519.43 and 77,397.30 is: 106,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,636.15 : 159,519.43 = 77,397.30 : x
  2. Step 2: Convert to fraction form
    115,636.15/159,519.43 = 77,397.30/x
  3. Step 3: Cross multiply
    115,636.15x = 159,519.43 × 77,397.30
  4. Step 4: Simplify right side
    115,636.15x = 12,346,372,678.09
  5. Step 5: Solve for x
    x = 12,346,372,678.09/115,636.15
  6. Step 6: Final answer
    x = 106,769.15

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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.