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Finding the Fourth Proportional to 172,365.40, 258,548.10 and 132,999.40

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Solution

The fourth proportional to 172,365.40, 258,548.10 and 132,999.40 is: 199,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,365.40 : 258,548.10 = 132,999.40 : x
  2. Step 2: Convert to fraction form
    172,365.40/258,548.10 = 132,999.40/x
  3. Step 3: Cross multiply
    172,365.40x = 258,548.10 × 132,999.40
  4. Step 4: Simplify right side
    172,365.40x = 34,386,742,171.14
  5. Step 5: Solve for x
    x = 34,386,742,171.14/172,365.40
  6. Step 6: Final answer
    x = 199,499.10

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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.