Home / 139,275.18-192,200.55-81,916.93

Finding the Fourth Proportional to 139,275.18, 192,200.55 and 81,916.93

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Solution

The fourth proportional to 139,275.18, 192,200.55 and 81,916.93 is: 113,045.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,275.18 : 192,200.55 = 81,916.93 : x
  2. Step 2: Convert to fraction form
    139,275.18/192,200.55 = 81,916.93/x
  3. Step 3: Cross multiply
    139,275.18x = 192,200.55 × 81,916.93
  4. Step 4: Simplify right side
    139,275.18x = 15,744,478,519.81
  5. Step 5: Solve for x
    x = 15,744,478,519.81/139,275.18
  6. Step 6: Final answer
    x = 113,045.83

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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.