Home / 103,090.19-142,071.81-80,393.23

Finding the Fourth Proportional to 103,090.19, 142,071.81 and 80,393.23

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Solution

The fourth proportional to 103,090.19, 142,071.81 and 80,393.23 is: 110,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,090.19 : 142,071.81 = 80,393.23 : x
  2. Step 2: Convert to fraction form
    103,090.19/142,071.81 = 80,393.23/x
  3. Step 3: Cross multiply
    103,090.19x = 142,071.81 × 80,393.23
  4. Step 4: Simplify right side
    103,090.19x = 11,421,611,342.67
  5. Step 5: Solve for x
    x = 11,421,611,342.67/103,090.19
  6. Step 6: Final answer
    x = 110,792.42

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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.