Home / 126,640.76-174,688.08-83,620.64

Finding the Fourth Proportional to 126,640.76, 174,688.08 and 83,620.64

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Solution

The fourth proportional to 126,640.76, 174,688.08 and 83,620.64 is: 115,346.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,640.76 : 174,688.08 = 83,620.64 : x
  2. Step 2: Convert to fraction form
    126,640.76/174,688.08 = 83,620.64/x
  3. Step 3: Cross multiply
    126,640.76x = 174,688.08 × 83,620.64
  4. Step 4: Simplify right side
    126,640.76x = 14,607,528,176.53
  5. Step 5: Solve for x
    x = 14,607,528,176.53/126,640.76
  6. Step 6: Final answer
    x = 115,346.19

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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.