Home / 160,878.96-221,867.64-100,455.12

Finding the Fourth Proportional to 160,878.96, 221,867.64 and 100,455.12

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Solution

The fourth proportional to 160,878.96, 221,867.64 and 100,455.12 is: 138,537.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,878.96 : 221,867.64 = 100,455.12 : x
  2. Step 2: Convert to fraction form
    160,878.96/221,867.64 = 100,455.12/x
  3. Step 3: Cross multiply
    160,878.96x = 221,867.64 × 100,455.12
  4. Step 4: Simplify right side
    160,878.96x = 22,287,740,400.32
  5. Step 5: Solve for x
    x = 22,287,740,400.32/160,878.96
  6. Step 6: Final answer
    x = 138,537.32

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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.