Home / 139,941.59-193,117.91-76,278.02

Finding the Fourth Proportional to 139,941.59, 193,117.91 and 76,278.02

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Solution

The fourth proportional to 139,941.59, 193,117.91 and 76,278.02 is: 105,262.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,941.59 : 193,117.91 = 76,278.02 : x
  2. Step 2: Convert to fraction form
    139,941.59/193,117.91 = 76,278.02/x
  3. Step 3: Cross multiply
    139,941.59x = 193,117.91 × 76,278.02
  4. Step 4: Simplify right side
    139,941.59x = 14,730,650,454.36
  5. Step 5: Solve for x
    x = 14,730,650,454.36/139,941.59
  6. Step 6: Final answer
    x = 105,262.85

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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.