Home / 139,990.32-193,187.46-76,329.20

Finding the Fourth Proportional to 139,990.32, 193,187.46 and 76,329.20

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Solution

The fourth proportional to 139,990.32, 193,187.46 and 76,329.20 is: 105,334.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,990.32 : 193,187.46 = 76,329.20 : x
  2. Step 2: Convert to fraction form
    139,990.32/193,187.46 = 76,329.20/x
  3. Step 3: Cross multiply
    139,990.32x = 193,187.46 × 76,329.20
  4. Step 4: Simplify right side
    139,990.32x = 14,745,844,271.83
  5. Step 5: Solve for x
    x = 14,745,844,271.83/139,990.32
  6. Step 6: Final answer
    x = 105,334.74

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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.