Home / 145,386,915.20-217,895,131.20-77,262,243.20

Finding the Fourth Proportional to 145,386,915.20, 217,895,131.20 and 77,262,243.20

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Solution

The fourth proportional to 145,386,915.20, 217,895,131.20 and 77,262,243.20 is: 115,794,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,386,915.20 : 217,895,131.20 = 77,262,243.20 : x
  2. Step 2: Convert to fraction form
    145,386,915.20/217,895,131.20 = 77,262,243.20/x
  3. Step 3: Cross multiply
    145,386,915.20x = 217,895,131.20 × 77,262,243.20
  4. Step 4: Simplify right side
    145,386,915.20x = 16,835,066,618,870,308
  5. Step 5: Solve for x
    x = 16,835,066,618,870,308/145,386,915.20
  6. Step 6: Final answer
    x = 115,794,922.78

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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.