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Finding the Fourth Proportional to 147,697.12, 203,820.96 and 84,038.41

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Solution

The fourth proportional to 147,697.12, 203,820.96 and 84,038.41 is: 115,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,697.12 : 203,820.96 = 84,038.41 : x
  2. Step 2: Convert to fraction form
    147,697.12/203,820.96 = 84,038.41/x
  3. Step 3: Cross multiply
    147,697.12x = 203,820.96 × 84,038.41
  4. Step 4: Simplify right side
    147,697.12x = 17,128,789,500.28
  5. Step 5: Solve for x
    x = 17,128,789,500.28/147,697.12
  6. Step 6: Final answer
    x = 115,972.40

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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.