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Finding the Fourth Proportional to 98,999.93, 136,619.08 and 55,987.88

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Solution

The fourth proportional to 98,999.93, 136,619.08 and 55,987.88 is: 77,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,999.93 : 136,619.08 = 55,987.88 : x
  2. Step 2: Convert to fraction form
    98,999.93/136,619.08 = 55,987.88/x
  3. Step 3: Cross multiply
    98,999.93x = 136,619.08 × 55,987.88
  4. Step 4: Simplify right side
    98,999.93x = 7,649,011,833.69
  5. Step 5: Solve for x
    x = 7,649,011,833.69/98,999.93
  6. Step 6: Final answer
    x = 77,262.80

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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.