Home / 139,942-193,117.08-76,279.24

Finding the Fourth Proportional to 139,942, 193,117.08 and 76,279.24

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Solution

The fourth proportional to 139,942, 193,117.08 and 76,279.24 is: 105,263.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,942 : 193,117.08 = 76,279.24 : x
  2. Step 2: Convert to fraction form
    139,942/193,117.08 = 76,279.24/x
  3. Step 3: Cross multiply
    139,942x = 193,117.08 × 76,279.24
  4. Step 4: Simplify right side
    139,942x = 14,730,824,093.42
  5. Step 5: Solve for x
    x = 14,730,824,093.42/139,942
  6. Step 6: Final answer
    x = 105,263.78

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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.