Home / 151,354.08-208,650.45-105,891.21

Finding the Fourth Proportional to 151,354.08, 208,650.45 and 105,891.21

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Solution

The fourth proportional to 151,354.08, 208,650.45 and 105,891.21 is: 145,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,354.08 : 208,650.45 = 105,891.21 : x
  2. Step 2: Convert to fraction form
    151,354.08/208,650.45 = 105,891.21/x
  3. Step 3: Cross multiply
    151,354.08x = 208,650.45 × 105,891.21
  4. Step 4: Simplify right side
    151,354.08x = 22,094,248,617.54
  5. Step 5: Solve for x
    x = 22,094,248,617.54/151,354.08
  6. Step 6: Final answer
    x = 145,977.23

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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.