Home / 168,515.86-232,445.09-128,141.10

Finding the Fourth Proportional to 168,515.86, 232,445.09 and 128,141.10

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Solution

The fourth proportional to 168,515.86, 232,445.09 and 128,141.10 is: 176,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,515.86 : 232,445.09 = 128,141.10 : x
  2. Step 2: Convert to fraction form
    168,515.86/232,445.09 = 128,141.10/x
  3. Step 3: Cross multiply
    168,515.86x = 232,445.09 × 128,141.10
  4. Step 4: Simplify right side
    168,515.86x = 29,785,768,881.49
  5. Step 5: Solve for x
    x = 29,785,768,881.49/168,515.86
  6. Step 6: Final answer
    x = 176,753.51

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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.