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Finding the Fourth Proportional to 172,402.60, 258,450.30 and 102,207.40

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Solution

The fourth proportional to 172,402.60, 258,450.30 and 102,207.40 is: 153,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,402.60 : 258,450.30 = 102,207.40 : x
  2. Step 2: Convert to fraction form
    172,402.60/258,450.30 = 102,207.40/x
  3. Step 3: Cross multiply
    172,402.60x = 258,450.30 × 102,207.40
  4. Step 4: Simplify right side
    172,402.60x = 26,415,533,192.22
  5. Step 5: Solve for x
    x = 26,415,533,192.22/172,402.60
  6. Step 6: Final answer
    x = 153,220.04

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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.