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Finding the Fourth Proportional to 147,573.55, 203,632.80 and 83,912.72

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Solution

The fourth proportional to 147,573.55, 203,632.80 and 83,912.72 is: 115,788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,573.55 : 203,632.80 = 83,912.72 : x
  2. Step 2: Convert to fraction form
    147,573.55/203,632.80 = 83,912.72/x
  3. Step 3: Cross multiply
    147,573.55x = 203,632.80 × 83,912.72
  4. Step 4: Simplify right side
    147,573.55x = 17,087,381,268.39
  5. Step 5: Solve for x
    x = 17,087,381,268.39/147,573.55
  6. Step 6: Final answer
    x = 115,788.91

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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.