Home / 142,137.58-213,206.34-42,299.20

Finding the Fourth Proportional to 142,137.58, 213,206.34 and 42,299.20

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Solution

The fourth proportional to 142,137.58, 213,206.34 and 42,299.20 is: 63,448.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,137.58 : 213,206.34 = 42,299.20 : x
  2. Step 2: Convert to fraction form
    142,137.58/213,206.34 = 42,299.20/x
  3. Step 3: Cross multiply
    142,137.58x = 213,206.34 × 42,299.20
  4. Step 4: Simplify right side
    142,137.58x = 9,018,457,616.93
  5. Step 5: Solve for x
    x = 9,018,457,616.93/142,137.58
  6. Step 6: Final answer
    x = 63,448.79

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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.