Home / 126,851.02-174,988.04-78,437.47

Finding the Fourth Proportional to 126,851.02, 174,988.04 and 78,437.47

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Solution

The fourth proportional to 126,851.02, 174,988.04 and 78,437.47 is: 108,202.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,851.02 : 174,988.04 = 78,437.47 : x
  2. Step 2: Convert to fraction form
    126,851.02/174,988.04 = 78,437.47/x
  3. Step 3: Cross multiply
    126,851.02x = 174,988.04 × 78,437.47
  4. Step 4: Simplify right side
    126,851.02x = 13,725,619,137.86
  5. Step 5: Solve for x
    x = 13,725,619,137.86/126,851.02
  6. Step 6: Final answer
    x = 108,202.67

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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.