Home / 313,636,143.72-432,818,100.32-172,518,100.73

Finding the Fourth Proportional to 313,636,143.72, 432,818,100.32 and 172,518,100.73

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Solution

The fourth proportional to 313,636,143.72, 432,818,100.32 and 172,518,100.73 is: 238,075,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,636,143.72 : 432,818,100.32 = 172,518,100.73 : x
  2. Step 2: Convert to fraction form
    313,636,143.72/432,818,100.32 = 172,518,100.73/x
  3. Step 3: Cross multiply
    313,636,143.72x = 432,818,100.32 × 172,518,100.73
  4. Step 4: Simplify right side
    313,636,143.72x = 74,668,956,628,340,672
  5. Step 5: Solve for x
    x = 74,668,956,628,340,672/313,636,143.72
  6. Step 6: Final answer
    x = 238,075,101.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.