Home / 120,276.02-165,983.62-77,908.28

Finding the Fourth Proportional to 120,276.02, 165,983.62 and 77,908.28

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Solution

The fourth proportional to 120,276.02, 165,983.62 and 77,908.28 is: 107,515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,276.02 : 165,983.62 = 77,908.28 : x
  2. Step 2: Convert to fraction form
    120,276.02/165,983.62 = 77,908.28/x
  3. Step 3: Cross multiply
    120,276.02x = 165,983.62 × 77,908.28
  4. Step 4: Simplify right side
    120,276.02x = 12,931,498,342.37
  5. Step 5: Solve for x
    x = 12,931,498,342.37/120,276.02
  6. Step 6: Final answer
    x = 107,515.18

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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.