Home / 172,341.75-258,558.18-78,825.63

Finding the Fourth Proportional to 172,341.75, 258,558.18 and 78,825.63

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Solution

The fourth proportional to 172,341.75, 258,558.18 and 78,825.63 is: 118,259.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,341.75 : 258,558.18 = 78,825.63 : x
  2. Step 2: Convert to fraction form
    172,341.75/258,558.18 = 78,825.63/x
  3. Step 3: Cross multiply
    172,341.75x = 258,558.18 × 78,825.63
  4. Step 4: Simplify right side
    172,341.75x = 20,381,011,430.15
  5. Step 5: Solve for x
    x = 20,381,011,430.15/172,341.75
  6. Step 6: Final answer
    x = 118,259.28

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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.