Home / 212,625,729.40-318,922,005.30-83,208,206.20

Finding the Fourth Proportional to 212,625,729.40, 318,922,005.30 and 83,208,206.20

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Solution

The fourth proportional to 212,625,729.40, 318,922,005.30 and 83,208,206.20 is: 124,805,817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,625,729.40 : 318,922,005.30 = 83,208,206.20 : x
  2. Step 2: Convert to fraction form
    212,625,729.40/318,922,005.30 = 83,208,206.20/x
  3. Step 3: Cross multiply
    212,625,729.40x = 318,922,005.30 × 83,208,206.20
  4. Step 4: Simplify right side
    212,625,729.40x = 26,536,927,978,719,896
  5. Step 5: Solve for x
    x = 26,536,927,978,719,896/212,625,729.40
  6. Step 6: Final answer
    x = 124,805,817.50

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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.