Home / 140,008,954.40-210,013,431.60-90,691,229.60

Finding the Fourth Proportional to 140,008,954.40, 210,013,431.60 and 90,691,229.60

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Solution

The fourth proportional to 140,008,954.40, 210,013,431.60 and 90,691,229.60 is: 136,036,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,008,954.40 : 210,013,431.60 = 90,691,229.60 : x
  2. Step 2: Convert to fraction form
    140,008,954.40/210,013,431.60 = 90,691,229.60/x
  3. Step 3: Cross multiply
    140,008,954.40x = 210,013,431.60 × 90,691,229.60
  4. Step 4: Simplify right side
    140,008,954.40x = 19,046,376,344,319,492
  5. Step 5: Solve for x
    x = 19,046,376,344,319,492/140,008,954.40
  6. Step 6: Final answer
    x = 136,036,844.40

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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.