Home / 126,750.67-190,125.50-31,981.07

Finding the Fourth Proportional to 126,750.67, 190,125.50 and 31,981.07

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Solution

The fourth proportional to 126,750.67, 190,125.50 and 31,981.07 is: 47,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,750.67 : 190,125.50 = 31,981.07 : x
  2. Step 2: Convert to fraction form
    126,750.67/190,125.50 = 31,981.07/x
  3. Step 3: Cross multiply
    126,750.67x = 190,125.50 × 31,981.07
  4. Step 4: Simplify right side
    126,750.67x = 6,080,417,239.69
  5. Step 5: Solve for x
    x = 6,080,417,239.69/126,750.67
  6. Step 6: Final answer
    x = 47,971.48

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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.