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Finding the Fourth Proportional to 134,643.99, 185,800.32 and 74,215.11

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Solution

The fourth proportional to 134,643.99, 185,800.32 and 74,215.11 is: 102,412.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,643.99 : 185,800.32 = 74,215.11 : x
  2. Step 2: Convert to fraction form
    134,643.99/185,800.32 = 74,215.11/x
  3. Step 3: Cross multiply
    134,643.99x = 185,800.32 × 74,215.11
  4. Step 4: Simplify right side
    134,643.99x = 13,789,191,186.84
  5. Step 5: Solve for x
    x = 13,789,191,186.84/134,643.99
  6. Step 6: Final answer
    x = 102,412.23

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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.