Home / 126,139.74-174,070.60-68,779.50

Finding the Fourth Proportional to 126,139.74, 174,070.60 and 68,779.50

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Solution

The fourth proportional to 126,139.74, 174,070.60 and 68,779.50 is: 94,914.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.74 : 174,070.60 = 68,779.50 : x
  2. Step 2: Convert to fraction form
    126,139.74/174,070.60 = 68,779.50/x
  3. Step 3: Cross multiply
    126,139.74x = 174,070.60 × 68,779.50
  4. Step 4: Simplify right side
    126,139.74x = 11,972,488,488.80
  5. Step 5: Solve for x
    x = 11,972,488,488.80/126,139.74
  6. Step 6: Final answer
    x = 94,914.49

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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.