Home / 126,890.17-190,352.73-42,656.87

Finding the Fourth Proportional to 126,890.17, 190,352.73 and 42,656.87

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Solution

The fourth proportional to 126,890.17, 190,352.73 and 42,656.87 is: 63,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,890.17 : 190,352.73 = 42,656.87 : x
  2. Step 2: Convert to fraction form
    126,890.17/190,352.73 = 42,656.87/x
  3. Step 3: Cross multiply
    126,890.17x = 190,352.73 × 42,656.87
  4. Step 4: Simplify right side
    126,890.17x = 8,119,851,657.76
  5. Step 5: Solve for x
    x = 8,119,851,657.76/126,890.17
  6. Step 6: Final answer
    x = 63,991.18

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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.