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Finding the Fourth Proportional to 147,718.64, 203,849.11 and 84,055.07

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Solution

The fourth proportional to 147,718.64, 203,849.11 and 84,055.07 is: 115,994.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,718.64 : 203,849.11 = 84,055.07 : x
  2. Step 2: Convert to fraction form
    147,718.64/203,849.11 = 84,055.07/x
  3. Step 3: Cross multiply
    147,718.64x = 203,849.11 × 84,055.07
  4. Step 4: Simplify right side
    147,718.64x = 17,134,551,210.49
  5. Step 5: Solve for x
    x = 17,134,551,210.49/147,718.64
  6. Step 6: Final answer
    x = 115,994.51

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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.