Home / 100,784.44-139,053.67-64,995

Finding the Fourth Proportional to 100,784.44, 139,053.67 and 64,995

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Solution

The fourth proportional to 100,784.44, 139,053.67 and 64,995 is: 89,674.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,784.44 : 139,053.67 = 64,995 : x
  2. Step 2: Convert to fraction form
    100,784.44/139,053.67 = 64,995/x
  3. Step 3: Cross multiply
    100,784.44x = 139,053.67 × 64,995
  4. Step 4: Simplify right side
    100,784.44x = 9,037,793,281.65
  5. Step 5: Solve for x
    x = 9,037,793,281.65/100,784.44
  6. Step 6: Final answer
    x = 89,674.49

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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.