Home / 99,355.06-137,109.36-56,342.74

Finding the Fourth Proportional to 99,355.06, 137,109.36 and 56,342.74

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Solution

The fourth proportional to 99,355.06, 137,109.36 and 56,342.74 is: 77,752.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,355.06 : 137,109.36 = 56,342.74 : x
  2. Step 2: Convert to fraction form
    99,355.06/137,109.36 = 56,342.74/x
  3. Step 3: Cross multiply
    99,355.06x = 137,109.36 × 56,342.74
  4. Step 4: Simplify right side
    99,355.06x = 7,725,117,022.05
  5. Step 5: Solve for x
    x = 7,725,117,022.05/99,355.06
  6. Step 6: Final answer
    x = 77,752.63

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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.