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Finding the Fourth Proportional to 119,230.80, 178,846.20 and 77,240.40

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Solution

The fourth proportional to 119,230.80, 178,846.20 and 77,240.40 is: 115,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,230.80 : 178,846.20 = 77,240.40 : x
  2. Step 2: Convert to fraction form
    119,230.80/178,846.20 = 77,240.40/x
  3. Step 3: Cross multiply
    119,230.80x = 178,846.20 × 77,240.40
  4. Step 4: Simplify right side
    119,230.80x = 13,814,152,026.48
  5. Step 5: Solve for x
    x = 13,814,152,026.48/119,230.80
  6. Step 6: Final answer
    x = 115,860.60

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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.