Home / 138,068.06-190,532.99-77,638.82

Finding the Fourth Proportional to 138,068.06, 190,532.99 and 77,638.82

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Solution

The fourth proportional to 138,068.06, 190,532.99 and 77,638.82 is: 107,141.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,068.06 : 190,532.99 = 77,638.82 : x
  2. Step 2: Convert to fraction form
    138,068.06/190,532.99 = 77,638.82/x
  3. Step 3: Cross multiply
    138,068.06x = 190,532.99 × 77,638.82
  4. Step 4: Simplify right side
    138,068.06x = 14,792,755,756.10
  5. Step 5: Solve for x
    x = 14,792,755,756.10/138,068.06
  6. Step 6: Final answer
    x = 107,141.05

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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.