Home / 138,345.66-190,934.42-77,927.76

Finding the Fourth Proportional to 138,345.66, 190,934.42 and 77,927.76

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Solution

The fourth proportional to 138,345.66, 190,934.42 and 77,927.76 is: 107,550.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,345.66 : 190,934.42 = 77,927.76 : x
  2. Step 2: Convert to fraction form
    138,345.66/190,934.42 = 77,927.76/x
  3. Step 3: Cross multiply
    138,345.66x = 190,934.42 × 77,927.76
  4. Step 4: Simplify right side
    138,345.66x = 14,879,091,267.86
  5. Step 5: Solve for x
    x = 14,879,091,267.86/138,345.66
  6. Step 6: Final answer
    x = 107,550.11

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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.