Home / 142,313.20-213,239.40-89,628.40

Finding the Fourth Proportional to 142,313.20, 213,239.40 and 89,628.40

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Solution

The fourth proportional to 142,313.20, 213,239.40 and 89,628.40 is: 134,297.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,313.20 : 213,239.40 = 89,628.40 : x
  2. Step 2: Convert to fraction form
    142,313.20/213,239.40 = 89,628.40/x
  3. Step 3: Cross multiply
    142,313.20x = 213,239.40 × 89,628.40
  4. Step 4: Simplify right side
    142,313.20x = 19,112,306,238.96
  5. Step 5: Solve for x
    x = 19,112,306,238.96/142,313.20
  6. Step 6: Final answer
    x = 134,297.49

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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.