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Finding the Fourth Proportional to 137,347.63, 189,523.72 and 79,999.52

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Solution

The fourth proportional to 137,347.63, 189,523.72 and 79,999.52 is: 110,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,347.63 : 189,523.72 = 79,999.52 : x
  2. Step 2: Convert to fraction form
    137,347.63/189,523.72 = 79,999.52/x
  3. Step 3: Cross multiply
    137,347.63x = 189,523.72 × 79,999.52
  4. Step 4: Simplify right side
    137,347.63x = 15,161,806,628.61
  5. Step 5: Solve for x
    x = 15,161,806,628.61/137,347.63
  6. Step 6: Final answer
    x = 110,390.01

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1.5x scale

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.