Home / 105,990.32-159,017.28-42,777.92

Finding the Fourth Proportional to 105,990.32, 159,017.28 and 42,777.92

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Solution

The fourth proportional to 105,990.32, 159,017.28 and 42,777.92 is: 64,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,990.32 : 159,017.28 = 42,777.92 : x
  2. Step 2: Convert to fraction form
    105,990.32/159,017.28 = 42,777.92/x
  3. Step 3: Cross multiply
    105,990.32x = 159,017.28 × 42,777.92
  4. Step 4: Simplify right side
    105,990.32x = 6,802,428,482.46
  5. Step 5: Solve for x
    x = 6,802,428,482.46/105,990.32
  6. Step 6: Final answer
    x = 64,179.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.