Home / 142,511.20-213,536.40-89,826.40

Finding the Fourth Proportional to 142,511.20, 213,536.40 and 89,826.40

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Solution

The fourth proportional to 142,511.20, 213,536.40 and 89,826.40 is: 134,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,511.20 : 213,536.40 = 89,826.40 : x
  2. Step 2: Convert to fraction form
    142,511.20/213,536.40 = 89,826.40/x
  3. Step 3: Cross multiply
    142,511.20x = 213,536.40 × 89,826.40
  4. Step 4: Simplify right side
    142,511.20x = 19,181,206,080.96
  5. Step 5: Solve for x
    x = 19,181,206,080.96/142,511.20
  6. Step 6: Final answer
    x = 134,594.38

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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.