Home / 99,253.78-136,976.34-56,811.40

Finding the Fourth Proportional to 99,253.78, 136,976.34 and 56,811.40

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Solution

The fourth proportional to 99,253.78, 136,976.34 and 56,811.40 is: 78,403.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,253.78 : 136,976.34 = 56,811.40 : x
  2. Step 2: Convert to fraction form
    99,253.78/136,976.34 = 56,811.40/x
  3. Step 3: Cross multiply
    99,253.78x = 136,976.34 × 56,811.40
  4. Step 4: Simplify right side
    99,253.78x = 7,781,817,642.28
  5. Step 5: Solve for x
    x = 7,781,817,642.28/99,253.78
  6. Step 6: Final answer
    x = 78,403.24

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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.