Home / 139,946.15-193,118.40-79,508.41

Finding the Fourth Proportional to 139,946.15, 193,118.40 and 79,508.41

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Solution

The fourth proportional to 139,946.15, 193,118.40 and 79,508.41 is: 109,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,946.15 : 193,118.40 = 79,508.41 : x
  2. Step 2: Convert to fraction form
    139,946.15/193,118.40 = 79,508.41/x
  3. Step 3: Cross multiply
    139,946.15x = 193,118.40 × 79,508.41
  4. Step 4: Simplify right side
    139,946.15x = 15,354,536,925.74
  5. Step 5: Solve for x
    x = 15,354,536,925.74/139,946.15
  6. Step 6: Final answer
    x = 109,717.47

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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.