Home / 138,274.02-190,807.25-77,832.63

Finding the Fourth Proportional to 138,274.02, 190,807.25 and 77,832.63

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Solution

The fourth proportional to 138,274.02, 190,807.25 and 77,832.63 is: 107,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,274.02 : 190,807.25 = 77,832.63 : x
  2. Step 2: Convert to fraction form
    138,274.02/190,807.25 = 77,832.63/x
  3. Step 3: Cross multiply
    138,274.02x = 190,807.25 × 77,832.63
  4. Step 4: Simplify right side
    138,274.02x = 14,851,029,701.40
  5. Step 5: Solve for x
    x = 14,851,029,701.40/138,274.02
  6. Step 6: Final answer
    x = 107,402.89

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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.