Home / 99,778.86-137,712.40-59,495.10

Finding the Fourth Proportional to 99,778.86, 137,712.40 and 59,495.10

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Solution

The fourth proportional to 99,778.86, 137,712.40 and 59,495.10 is: 82,113.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,778.86 : 137,712.40 = 59,495.10 : x
  2. Step 2: Convert to fraction form
    99,778.86/137,712.40 = 59,495.10/x
  3. Step 3: Cross multiply
    99,778.86x = 137,712.40 × 59,495.10
  4. Step 4: Simplify right side
    99,778.86x = 8,193,213,009.24
  5. Step 5: Solve for x
    x = 8,193,213,009.24/99,778.86
  6. Step 6: Final answer
    x = 82,113.72

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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.