Home / 234,921.20-352,069.80-128,030.72

Finding the Fourth Proportional to 234,921.20, 352,069.80 and 128,030.72

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Solution

The fourth proportional to 234,921.20, 352,069.80 and 128,030.72 is: 191,876.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,921.20 : 352,069.80 = 128,030.72 : x
  2. Step 2: Convert to fraction form
    234,921.20/352,069.80 = 128,030.72/x
  3. Step 3: Cross multiply
    234,921.20x = 352,069.80 × 128,030.72
  4. Step 4: Simplify right side
    234,921.20x = 45,075,749,984.26
  5. Step 5: Solve for x
    x = 45,075,749,984.26/234,921.20
  6. Step 6: Final answer
    x = 191,876.04

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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.