Home / 103,540.98-142,852.20-84,387.84

Finding the Fourth Proportional to 103,540.98, 142,852.20 and 84,387.84

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Solution

The fourth proportional to 103,540.98, 142,852.20 and 84,387.84 is: 116,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,540.98 : 142,852.20 = 84,387.84 : x
  2. Step 2: Convert to fraction form
    103,540.98/142,852.20 = 84,387.84/x
  3. Step 3: Cross multiply
    103,540.98x = 142,852.20 × 84,387.84
  4. Step 4: Simplify right side
    103,540.98x = 12,054,988,597.25
  5. Step 5: Solve for x
    x = 12,054,988,597.25/103,540.98
  6. Step 6: Final answer
    x = 116,427.22

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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.