Home / 185,639.12-256,138.07-105,066.64

Finding the Fourth Proportional to 185,639.12, 256,138.07 and 105,066.64

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Solution

The fourth proportional to 185,639.12, 256,138.07 and 105,066.64 is: 144,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,639.12 : 256,138.07 = 105,066.64 : x
  2. Step 2: Convert to fraction form
    185,639.12/256,138.07 = 105,066.64/x
  3. Step 3: Cross multiply
    185,639.12x = 256,138.07 × 105,066.64
  4. Step 4: Simplify right side
    185,639.12x = 26,911,566,185.82
  5. Step 5: Solve for x
    x = 26,911,566,185.82/185,639.12
  6. Step 6: Final answer
    x = 144,967.11

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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.