Home / 185,518.50-278,278.53-78,874.98

Finding the Fourth Proportional to 185,518.50, 278,278.53 and 78,874.98

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Solution

The fourth proportional to 185,518.50, 278,278.53 and 78,874.98 is: 118,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,518.50 : 278,278.53 = 78,874.98 : x
  2. Step 2: Convert to fraction form
    185,518.50/278,278.53 = 78,874.98/x
  3. Step 3: Cross multiply
    185,518.50x = 278,278.53 × 78,874.98
  4. Step 4: Simplify right side
    185,518.50x = 21,949,213,488.18
  5. Step 5: Solve for x
    x = 21,949,213,488.18/185,518.50
  6. Step 6: Final answer
    x = 118,312.80

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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.