Home / 230,135.10-317,577.57-128,164.86

Finding the Fourth Proportional to 230,135.10, 317,577.57 and 128,164.86

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Solution

The fourth proportional to 230,135.10, 317,577.57 and 128,164.86 is: 176,862.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,135.10 : 317,577.57 = 128,164.86 : x
  2. Step 2: Convert to fraction form
    230,135.10/317,577.57 = 128,164.86/x
  3. Step 3: Cross multiply
    230,135.10x = 317,577.57 × 128,164.86
  4. Step 4: Simplify right side
    230,135.10x = 40,702,284,798.19
  5. Step 5: Solve for x
    x = 40,702,284,798.19/230,135.10
  6. Step 6: Final answer
    x = 176,862.57

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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.