Home / 142,008.12-212,975.64-42,144.66

Finding the Fourth Proportional to 142,008.12, 212,975.64 and 42,144.66

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Solution

The fourth proportional to 142,008.12, 212,975.64 and 42,144.66 is: 63,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,008.12 : 212,975.64 = 42,144.66 : x
  2. Step 2: Convert to fraction form
    142,008.12/212,975.64 = 42,144.66/x
  3. Step 3: Cross multiply
    142,008.12x = 212,975.64 × 42,144.66
  4. Step 4: Simplify right side
    142,008.12x = 8,975,785,936.08
  5. Step 5: Solve for x
    x = 8,975,785,936.08/142,008.12
  6. Step 6: Final answer
    x = 63,206.15

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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.