Home / 185,973.60-256,644.79-105,402.47

Finding the Fourth Proportional to 185,973.60, 256,644.79 and 105,402.47

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Solution

The fourth proportional to 185,973.60, 256,644.79 and 105,402.47 is: 145,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,973.60 : 256,644.79 = 105,402.47 : x
  2. Step 2: Convert to fraction form
    185,973.60/256,644.79 = 105,402.47/x
  3. Step 3: Cross multiply
    185,973.60x = 256,644.79 × 105,402.47
  4. Step 4: Simplify right side
    185,973.60x = 27,050,993,676.57
  5. Step 5: Solve for x
    x = 27,050,993,676.57/185,973.60
  6. Step 6: Final answer
    x = 145,456.10

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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.