Home / 102,972.60-142,002.35-80,303.33

Finding the Fourth Proportional to 102,972.60, 142,002.35 and 80,303.33

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Solution

The fourth proportional to 102,972.60, 142,002.35 and 80,303.33 is: 110,740.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,972.60 : 142,002.35 = 80,303.33 : x
  2. Step 2: Convert to fraction form
    102,972.60/142,002.35 = 80,303.33/x
  3. Step 3: Cross multiply
    102,972.60x = 142,002.35 × 80,303.33
  4. Step 4: Simplify right side
    102,972.60x = 11,403,261,827.45
  5. Step 5: Solve for x
    x = 11,403,261,827.45/102,972.60
  6. Step 6: Final answer
    x = 110,740.74

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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.