Home / 115,320.85-159,026.34-77,080.47

Finding the Fourth Proportional to 115,320.85, 159,026.34 and 77,080.47

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Solution

The fourth proportional to 115,320.85, 159,026.34 and 77,080.47 is: 106,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,320.85 : 159,026.34 = 77,080.47 : x
  2. Step 2: Convert to fraction form
    115,320.85/159,026.34 = 77,080.47/x
  3. Step 3: Cross multiply
    115,320.85x = 159,026.34 × 77,080.47
  4. Step 4: Simplify right side
    115,320.85x = 12,257,825,406.86
  5. Step 5: Solve for x
    x = 12,257,825,406.86/115,320.85
  6. Step 6: Final answer
    x = 106,293.23

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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.