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Finding the Fourth Proportional to 172,357.60, 258,730.80 and 133,088.80

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Solution

The fourth proportional to 172,357.60, 258,730.80 and 133,088.80 is: 199,783.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,357.60 : 258,730.80 = 133,088.80 : x
  2. Step 2: Convert to fraction form
    172,357.60/258,730.80 = 133,088.80/x
  3. Step 3: Cross multiply
    172,357.60x = 258,730.80 × 133,088.80
  4. Step 4: Simplify right side
    172,357.60x = 34,434,171,695.04
  5. Step 5: Solve for x
    x = 34,434,171,695.04/172,357.60
  6. Step 6: Final answer
    x = 199,783.31

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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.