Home / 171,640.23-257,460.32-66,459.20

Finding the Fourth Proportional to 171,640.23, 257,460.32 and 66,459.20

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Solution

The fourth proportional to 171,640.23, 257,460.32 and 66,459.20 is: 99,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,640.23 : 257,460.32 = 66,459.20 : x
  2. Step 2: Convert to fraction form
    171,640.23/257,460.32 = 66,459.20/x
  3. Step 3: Cross multiply
    171,640.23x = 257,460.32 × 66,459.20
  4. Step 4: Simplify right side
    171,640.23x = 17,110,605,279.35
  5. Step 5: Solve for x
    x = 17,110,605,279.35/171,640.23
  6. Step 6: Final answer
    x = 99,688.78

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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.