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Finding the Fourth Proportional to 172,365.60, 258,548.40 and 83,792.10

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Solution

The fourth proportional to 172,365.60, 258,548.40 and 83,792.10 is: 125,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,365.60 : 258,548.40 = 83,792.10 : x
  2. Step 2: Convert to fraction form
    172,365.60/258,548.40 = 83,792.10/x
  3. Step 3: Cross multiply
    172,365.60x = 258,548.40 × 83,792.10
  4. Step 4: Simplify right side
    172,365.60x = 21,664,313,387.64
  5. Step 5: Solve for x
    x = 21,664,313,387.64/172,365.60
  6. Step 6: Final answer
    x = 125,688.15

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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.