Home / 118,222.20-177,041.70-78,564.60

Finding the Fourth Proportional to 118,222.20, 177,041.70 and 78,564.60

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Solution

The fourth proportional to 118,222.20, 177,041.70 and 78,564.60 is: 117,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,222.20 : 177,041.70 = 78,564.60 : x
  2. Step 2: Convert to fraction form
    118,222.20/177,041.70 = 78,564.60/x
  3. Step 3: Cross multiply
    118,222.20x = 177,041.70 × 78,564.60
  4. Step 4: Simplify right side
    118,222.20x = 13,909,210,343.82
  5. Step 5: Solve for x
    x = 13,909,210,343.82/118,222.20
  6. Step 6: Final answer
    x = 117,653.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.