Home / 99,929.76-137,910.93-56,911.07

Finding the Fourth Proportional to 99,929.76, 137,910.93 and 56,911.07

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Solution

The fourth proportional to 99,929.76, 137,910.93 and 56,911.07 is: 78,541.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,929.76 : 137,910.93 = 56,911.07 : x
  2. Step 2: Convert to fraction form
    99,929.76/137,910.93 = 56,911.07/x
  3. Step 3: Cross multiply
    99,929.76x = 137,910.93 × 56,911.07
  4. Step 4: Simplify right side
    99,929.76x = 7,848,658,591.00
  5. Step 5: Solve for x
    x = 7,848,658,591.00/99,929.76
  6. Step 6: Final answer
    x = 78,541.75

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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.