Home / 142,039.09-213,087.80-42,190.39

Finding the Fourth Proportional to 142,039.09, 213,087.80 and 42,190.39

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Solution

The fourth proportional to 142,039.09, 213,087.80 and 42,190.39 is: 63,294.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,039.09 : 213,087.80 = 42,190.39 : x
  2. Step 2: Convert to fraction form
    142,039.09/213,087.80 = 42,190.39/x
  3. Step 3: Cross multiply
    142,039.09x = 213,087.80 × 42,190.39
  4. Step 4: Simplify right side
    142,039.09x = 8,990,257,386.24
  5. Step 5: Solve for x
    x = 8,990,257,386.24/142,039.09
  6. Step 6: Final answer
    x = 63,294.25

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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.