Home / 139,938.79-193,113.57-76,276.84

Finding the Fourth Proportional to 139,938.79, 193,113.57 and 76,276.84

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Solution

The fourth proportional to 139,938.79, 193,113.57 and 76,276.84 is: 105,260.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,938.79 : 193,113.57 = 76,276.84 : x
  2. Step 2: Convert to fraction form
    139,938.79/193,113.57 = 76,276.84/x
  3. Step 3: Cross multiply
    139,938.79x = 193,113.57 × 76,276.84
  4. Step 4: Simplify right side
    139,938.79x = 14,730,092,880.72
  5. Step 5: Solve for x
    x = 14,730,092,880.72/139,938.79
  6. Step 6: Final answer
    x = 105,260.97

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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.