Home / 142,720.26-214,072.15-42,878.26

Finding the Fourth Proportional to 142,720.26, 214,072.15 and 42,878.26

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Solution

The fourth proportional to 142,720.26, 214,072.15 and 42,878.26 is: 64,314.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.26 : 214,072.15 = 42,878.26 : x
  2. Step 2: Convert to fraction form
    142,720.26/214,072.15 = 42,878.26/x
  3. Step 3: Cross multiply
    142,720.26x = 214,072.15 × 42,878.26
  4. Step 4: Simplify right side
    142,720.26x = 9,179,041,306.46
  5. Step 5: Solve for x
    x = 9,179,041,306.46/142,720.26
  6. Step 6: Final answer
    x = 64,314.91

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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.