Home / 139,862.08-193,009.69-76,199.88

Finding the Fourth Proportional to 139,862.08, 193,009.69 and 76,199.88

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Solution

The fourth proportional to 139,862.08, 193,009.69 and 76,199.88 is: 105,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,862.08 : 193,009.69 = 76,199.88 : x
  2. Step 2: Convert to fraction form
    139,862.08/193,009.69 = 76,199.88/x
  3. Step 3: Cross multiply
    139,862.08x = 193,009.69 × 76,199.88
  4. Step 4: Simplify right side
    139,862.08x = 14,707,315,216.84
  5. Step 5: Solve for x
    x = 14,707,315,216.84/139,862.08
  6. Step 6: Final answer
    x = 105,155.85

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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.