Home / 142,129.36-213,156.90-42,262.68

Finding the Fourth Proportional to 142,129.36, 213,156.90 and 42,262.68

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Solution

The fourth proportional to 142,129.36, 213,156.90 and 42,262.68 is: 63,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,129.36 : 213,156.90 = 42,262.68 : x
  2. Step 2: Convert to fraction form
    142,129.36/213,156.90 = 42,262.68/x
  3. Step 3: Cross multiply
    142,129.36x = 213,156.90 × 42,262.68
  4. Step 4: Simplify right side
    142,129.36x = 9,008,581,854.49
  5. Step 5: Solve for x
    x = 9,008,581,854.49/142,129.36
  6. Step 6: Final answer
    x = 63,382.98

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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.