Home / 99,769.32-137,746.44-77,068.80

Finding the Fourth Proportional to 99,769.32, 137,746.44 and 77,068.80

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Solution

The fourth proportional to 99,769.32, 137,746.44 and 77,068.80 is: 106,404.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,769.32 : 137,746.44 = 77,068.80 : x
  2. Step 2: Convert to fraction form
    99,769.32/137,746.44 = 77,068.80/x
  3. Step 3: Cross multiply
    99,769.32x = 137,746.44 × 77,068.80
  4. Step 4: Simplify right side
    99,769.32x = 10,615,952,835.07
  5. Step 5: Solve for x
    x = 10,615,952,835.07/99,769.32
  6. Step 6: Final answer
    x = 106,404.98

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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.