Home / 212,735,972.80-318,880,010.40-83,293,566.40

Finding the Fourth Proportional to 212,735,972.80, 318,880,010.40 and 83,293,566.40

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Solution

The fourth proportional to 212,735,972.80, 318,880,010.40 and 83,293,566.40 is: 124,852,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,735,972.80 : 318,880,010.40 = 83,293,566.40 : x
  2. Step 2: Convert to fraction form
    212,735,972.80/318,880,010.40 = 83,293,566.40/x
  3. Step 3: Cross multiply
    212,735,972.80x = 318,880,010.40 × 83,293,566.40
  4. Step 4: Simplify right side
    212,735,972.80x = 26,560,653,319,885,092
  5. Step 5: Solve for x
    x = 26,560,653,319,885,092/212,735,972.80
  6. Step 6: Final answer
    x = 124,852,665.82

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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.