Home / 142,587.48-213,760.92-89,880.76

Finding the Fourth Proportional to 142,587.48, 213,760.92 and 89,880.76

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Solution

The fourth proportional to 142,587.48, 213,760.92 and 89,880.76 is: 134,745.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,587.48 : 213,760.92 = 89,880.76 : x
  2. Step 2: Convert to fraction form
    142,587.48/213,760.92 = 89,880.76/x
  3. Step 3: Cross multiply
    142,587.48x = 213,760.92 × 89,880.76
  4. Step 4: Simplify right side
    142,587.48x = 19,212,993,947.90
  5. Step 5: Solve for x
    x = 19,212,993,947.90/142,587.48
  6. Step 6: Final answer
    x = 134,745.31

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1.5x scale

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.