Home / 190,078.72-262,328.16-109,509.28

Finding the Fourth Proportional to 190,078.72, 262,328.16 and 109,509.28

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Solution

The fourth proportional to 190,078.72, 262,328.16 and 109,509.28 is: 151,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,078.72 : 262,328.16 = 109,509.28 : x
  2. Step 2: Convert to fraction form
    190,078.72/262,328.16 = 109,509.28/x
  3. Step 3: Cross multiply
    190,078.72x = 262,328.16 × 109,509.28
  4. Step 4: Simplify right side
    190,078.72x = 28,727,367,925.32
  5. Step 5: Solve for x
    x = 28,727,367,925.32/190,078.72
  6. Step 6: Final answer
    x = 151,134.06

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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.