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Finding the Fourth Proportional to 171,947.70, 257,921.55 and 101,790.90

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Solution

The fourth proportional to 171,947.70, 257,921.55 and 101,790.90 is: 152,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,947.70 : 257,921.55 = 101,790.90 : x
  2. Step 2: Convert to fraction form
    171,947.70/257,921.55 = 101,790.90/x
  3. Step 3: Cross multiply
    171,947.70x = 257,921.55 × 101,790.90
  4. Step 4: Simplify right side
    171,947.70x = 26,254,066,703.90
  5. Step 5: Solve for x
    x = 26,254,066,703.90/171,947.70
  6. Step 6: Final answer
    x = 152,686.35

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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.