Home / 142,649.10-213,853.22-89,942.40

Finding the Fourth Proportional to 142,649.10, 213,853.22 and 89,942.40

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Solution

The fourth proportional to 142,649.10, 213,853.22 and 89,942.40 is: 134,837.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,649.10 : 213,853.22 = 89,942.40 : x
  2. Step 2: Convert to fraction form
    142,649.10/213,853.22 = 89,942.40/x
  3. Step 3: Cross multiply
    142,649.10x = 213,853.22 × 89,942.40
  4. Step 4: Simplify right side
    142,649.10x = 19,234,471,854.53
  5. Step 5: Solve for x
    x = 19,234,471,854.53/142,649.10
  6. Step 6: Final answer
    x = 134,837.67

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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.