Home / 212,492,410.98-318,708,340.80-66,922,184.76

Finding the Fourth Proportional to 212,492,410.98, 318,708,340.80 and 66,922,184.76

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Solution

The fourth proportional to 212,492,410.98, 318,708,340.80 and 66,922,184.76 is: 100,373,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,492,410.98 : 318,708,340.80 = 66,922,184.76 : x
  2. Step 2: Convert to fraction form
    212,492,410.98/318,708,340.80 = 66,922,184.76/x
  3. Step 3: Cross multiply
    212,492,410.98x = 318,708,340.80 × 66,922,184.76
  4. Step 4: Simplify right side
    212,492,410.98x = 21,328,658,467,570,648
  5. Step 5: Solve for x
    x = 21,328,658,467,570,648/212,492,410.98
  6. Step 6: Final answer
    x = 100,373,742.15

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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.