Home / 112,407.81-155,120.94-61,419.45

Finding the Fourth Proportional to 112,407.81, 155,120.94 and 61,419.45

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Solution

The fourth proportional to 112,407.81, 155,120.94 and 61,419.45 is: 84,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,407.81 : 155,120.94 = 61,419.45 : x
  2. Step 2: Convert to fraction form
    112,407.81/155,120.94 = 61,419.45/x
  3. Step 3: Cross multiply
    112,407.81x = 155,120.94 × 61,419.45
  4. Step 4: Simplify right side
    112,407.81x = 9,527,442,818.28
  5. Step 5: Solve for x
    x = 9,527,442,818.28/112,407.81
  6. Step 6: Final answer
    x = 84,757.84

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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.