Home / 98,938.94-136,566.74-63,128.88

Finding the Fourth Proportional to 98,938.94, 136,566.74 and 63,128.88

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Solution

The fourth proportional to 98,938.94, 136,566.74 and 63,128.88 is: 87,137.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,938.94 : 136,566.74 = 63,128.88 : x
  2. Step 2: Convert to fraction form
    98,938.94/136,566.74 = 63,128.88/x
  3. Step 3: Cross multiply
    98,938.94x = 136,566.74 × 63,128.88
  4. Step 4: Simplify right side
    98,938.94x = 8,621,305,499.27
  5. Step 5: Solve for x
    x = 8,621,305,499.27/98,938.94
  6. Step 6: Final answer
    x = 87,137.64

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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.