Home / 142,705.60-213,903.89-92,821.35

Finding the Fourth Proportional to 142,705.60, 213,903.89 and 92,821.35

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Solution

The fourth proportional to 142,705.60, 213,903.89 and 92,821.35 is: 139,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,705.60 : 213,903.89 = 92,821.35 : x
  2. Step 2: Convert to fraction form
    142,705.60/213,903.89 = 92,821.35/x
  3. Step 3: Cross multiply
    142,705.60x = 213,903.89 × 92,821.35
  4. Step 4: Simplify right side
    142,705.60x = 19,854,847,840.05
  5. Step 5: Solve for x
    x = 19,854,847,840.05/142,705.60
  6. Step 6: Final answer
    x = 139,131.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.