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Finding the Fourth Proportional to 172,340.70, 258,535.35 and 53,999.70

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Solution

The fourth proportional to 172,340.70, 258,535.35 and 53,999.70 is: 81,007.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,340.70 : 258,535.35 = 53,999.70 : x
  2. Step 2: Convert to fraction form
    172,340.70/258,535.35 = 53,999.70/x
  3. Step 3: Cross multiply
    172,340.70x = 258,535.35 × 53,999.70
  4. Step 4: Simplify right side
    172,340.70x = 13,960,831,339.40
  5. Step 5: Solve for x
    x = 13,960,831,339.40/172,340.70
  6. Step 6: Final answer
    x = 81,007.16

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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.