Home / 137,962.80-190,386.18-76,712.76

Finding the Fourth Proportional to 137,962.80, 190,386.18 and 76,712.76

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Solution

The fourth proportional to 137,962.80, 190,386.18 and 76,712.76 is: 105,862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,962.80 : 190,386.18 = 76,712.76 : x
  2. Step 2: Convert to fraction form
    137,962.80/190,386.18 = 76,712.76/x
  3. Step 3: Cross multiply
    137,962.80x = 190,386.18 × 76,712.76
  4. Step 4: Simplify right side
    137,962.80x = 14,605,049,333.66
  5. Step 5: Solve for x
    x = 14,605,049,333.66/137,962.80
  6. Step 6: Final answer
    x = 105,862.23

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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.