Home / 142,290.77-213,428.46-72,168.26

Finding the Fourth Proportional to 142,290.77, 213,428.46 and 72,168.26

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Solution

The fourth proportional to 142,290.77, 213,428.46 and 72,168.26 is: 108,248.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,290.77 : 213,428.46 = 72,168.26 : x
  2. Step 2: Convert to fraction form
    142,290.77/213,428.46 = 72,168.26/x
  3. Step 3: Cross multiply
    142,290.77x = 213,428.46 × 72,168.26
  4. Step 4: Simplify right side
    142,290.77x = 15,402,760,592.68
  5. Step 5: Solve for x
    x = 15,402,760,592.68/142,290.77
  6. Step 6: Final answer
    x = 108,248.49

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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.