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Finding the Fourth Proportional to 134,856.70, 202,285.05 and 72,648.70

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Solution

The fourth proportional to 134,856.70, 202,285.05 and 72,648.70 is: 108,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,856.70 : 202,285.05 = 72,648.70 : x
  2. Step 2: Convert to fraction form
    134,856.70/202,285.05 = 72,648.70/x
  3. Step 3: Cross multiply
    134,856.70x = 202,285.05 × 72,648.70
  4. Step 4: Simplify right side
    134,856.70x = 14,695,745,911.94
  5. Step 5: Solve for x
    x = 14,695,745,911.94/134,856.70
  6. Step 6: Final answer
    x = 108,973.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.