Home / 158,687.28-218,994.57-87,070.32

Finding the Fourth Proportional to 158,687.28, 218,994.57 and 87,070.32

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Solution

The fourth proportional to 158,687.28, 218,994.57 and 87,070.32 is: 120,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,687.28 : 218,994.57 = 87,070.32 : x
  2. Step 2: Convert to fraction form
    158,687.28/218,994.57 = 87,070.32/x
  3. Step 3: Cross multiply
    158,687.28x = 218,994.57 × 87,070.32
  4. Step 4: Simplify right side
    158,687.28x = 19,067,927,288.16
  5. Step 5: Solve for x
    x = 19,067,927,288.16/158,687.28
  6. Step 6: Final answer
    x = 120,160.40

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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.