Home / 133,135.71-183,751.02-78,685.67

Finding the Fourth Proportional to 133,135.71, 183,751.02 and 78,685.67

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Solution

The fourth proportional to 133,135.71, 183,751.02 and 78,685.67 is: 108,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,135.71 : 183,751.02 = 78,685.67 : x
  2. Step 2: Convert to fraction form
    133,135.71/183,751.02 = 78,685.67/x
  3. Step 3: Cross multiply
    133,135.71x = 183,751.02 × 78,685.67
  4. Step 4: Simplify right side
    133,135.71x = 14,458,571,203.13
  5. Step 5: Solve for x
    x = 14,458,571,203.13/133,135.71
  6. Step 6: Final answer
    x = 108,600.25

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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.