Home / 170,820.78-235,714.77-99,186.81

Finding the Fourth Proportional to 170,820.78, 235,714.77 and 99,186.81

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Solution

The fourth proportional to 170,820.78, 235,714.77 and 99,186.81 is: 136,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,820.78 : 235,714.77 = 99,186.81 : x
  2. Step 2: Convert to fraction form
    170,820.78/235,714.77 = 99,186.81/x
  3. Step 3: Cross multiply
    170,820.78x = 235,714.77 × 99,186.81
  4. Step 4: Simplify right side
    170,820.78x = 23,379,796,106.18
  5. Step 5: Solve for x
    x = 23,379,796,106.18/170,820.78
  6. Step 6: Final answer
    x = 136,867.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.