Home / 212,338,149.17-318,518,574.48-66,783,060.77

Finding the Fourth Proportional to 212,338,149.17, 318,518,574.48 and 66,783,060.77

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Solution

The fourth proportional to 212,338,149.17, 318,518,574.48 and 66,783,060.77 is: 100,178,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,338,149.17 : 318,518,574.48 = 66,783,060.77 : x
  2. Step 2: Convert to fraction form
    212,338,149.17/318,518,574.48 = 66,783,060.77/x
  3. Step 3: Cross multiply
    212,338,149.17x = 318,518,574.48 × 66,783,060.77
  4. Step 4: Simplify right side
    212,338,149.17x = 21,271,645,314,279,020
  5. Step 5: Solve for x
    x = 21,271,645,314,279,020/212,338,149.17
  6. Step 6: Final answer
    x = 100,178,161.10

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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.