Home / 138,184.63-190,693.55-77,754.06

Finding the Fourth Proportional to 138,184.63, 190,693.55 and 77,754.06

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Solution

The fourth proportional to 138,184.63, 190,693.55 and 77,754.06 is: 107,299.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,184.63 : 190,693.55 = 77,754.06 : x
  2. Step 2: Convert to fraction form
    138,184.63/190,693.55 = 77,754.06/x
  3. Step 3: Cross multiply
    138,184.63x = 190,693.55 × 77,754.06
  4. Step 4: Simplify right side
    138,184.63x = 14,827,197,728.31
  5. Step 5: Solve for x
    x = 14,827,197,728.31/138,184.63
  6. Step 6: Final answer
    x = 107,299.91

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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.