Home / 102,245.81-141,102.36-55,681.79

Finding the Fourth Proportional to 102,245.81, 141,102.36 and 55,681.79

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Solution

The fourth proportional to 102,245.81, 141,102.36 and 55,681.79 is: 76,842.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,245.81 : 141,102.36 = 55,681.79 : x
  2. Step 2: Convert to fraction form
    102,245.81/141,102.36 = 55,681.79/x
  3. Step 3: Cross multiply
    102,245.81x = 141,102.36 × 55,681.79
  4. Step 4: Simplify right side
    102,245.81x = 7,856,831,272.51
  5. Step 5: Solve for x
    x = 7,856,831,272.51/102,245.81
  6. Step 6: Final answer
    x = 76,842.58

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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.