Home / 137,948.47-190,372.27-77,515.49

Finding the Fourth Proportional to 137,948.47, 190,372.27 and 77,515.49

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Solution

The fourth proportional to 137,948.47, 190,372.27 and 77,515.49 is: 106,973.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,948.47 : 190,372.27 = 77,515.49 : x
  2. Step 2: Convert to fraction form
    137,948.47/190,372.27 = 77,515.49/x
  3. Step 3: Cross multiply
    137,948.47x = 190,372.27 × 77,515.49
  4. Step 4: Simplify right side
    137,948.47x = 14,756,799,791.46
  5. Step 5: Solve for x
    x = 14,756,799,791.46/137,948.47
  6. Step 6: Final answer
    x = 106,973.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.