Home / 138,557.79-191,210.63-74,895.44

Finding the Fourth Proportional to 138,557.79, 191,210.63 and 74,895.44

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Solution

The fourth proportional to 138,557.79, 191,210.63 and 74,895.44 is: 103,356.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,557.79 : 191,210.63 = 74,895.44 : x
  2. Step 2: Convert to fraction form
    138,557.79/191,210.63 = 74,895.44/x
  3. Step 3: Cross multiply
    138,557.79x = 191,210.63 × 74,895.44
  4. Step 4: Simplify right side
    138,557.79x = 14,320,802,936.00
  5. Step 5: Solve for x
    x = 14,320,802,936.00/138,557.79
  6. Step 6: Final answer
    x = 103,356.17

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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.