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Finding the Fourth Proportional to 120,699.60, 180,934.20 and 94,030.80

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Solution

The fourth proportional to 120,699.60, 180,934.20 and 94,030.80 is: 140,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,699.60 : 180,934.20 = 94,030.80 : x
  2. Step 2: Convert to fraction form
    120,699.60/180,934.20 = 94,030.80/x
  3. Step 3: Cross multiply
    120,699.60x = 180,934.20 × 94,030.80
  4. Step 4: Simplify right side
    120,699.60x = 17,013,387,573.36
  5. Step 5: Solve for x
    x = 17,013,387,573.36/120,699.60
  6. Step 6: Final answer
    x = 140,956.45

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1.5x scale

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.