Home / 141,972,389.40-212,811,617.70-77,139,211.80

Finding the Fourth Proportional to 141,972,389.40, 212,811,617.70 and 77,139,211.80

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Solution

The fourth proportional to 141,972,389.40, 212,811,617.70 and 77,139,211.80 is: 115,628,965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,972,389.40 : 212,811,617.70 = 77,139,211.80 : x
  2. Step 2: Convert to fraction form
    141,972,389.40/212,811,617.70 = 77,139,211.80/x
  3. Step 3: Cross multiply
    141,972,389.40x = 212,811,617.70 × 77,139,211.80
  4. Step 4: Simplify right side
    141,972,389.40x = 16,416,120,451,260,928
  5. Step 5: Solve for x
    x = 16,416,120,451,260,928/141,972,389.40
  6. Step 6: Final answer
    x = 115,628,965.04

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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.