Home / 134,880.35-186,020.60-81,155.31

Finding the Fourth Proportional to 134,880.35, 186,020.60 and 81,155.31

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Solution

The fourth proportional to 134,880.35, 186,020.60 and 81,155.31 is: 111,925.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,880.35 : 186,020.60 = 81,155.31 : x
  2. Step 2: Convert to fraction form
    134,880.35/186,020.60 = 81,155.31/x
  3. Step 3: Cross multiply
    134,880.35x = 186,020.60 × 81,155.31
  4. Step 4: Simplify right side
    134,880.35x = 15,096,559,053.61
  5. Step 5: Solve for x
    x = 15,096,559,053.61/134,880.35
  6. Step 6: Final answer
    x = 111,925.57

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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.