Home / 141,856,808.40-212,785,212.60-81,222,670.80

Finding the Fourth Proportional to 141,856,808.40, 212,785,212.60 and 81,222,670.80

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Solution

The fourth proportional to 141,856,808.40, 212,785,212.60 and 81,222,670.80 is: 121,834,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,856,808.40 : 212,785,212.60 = 81,222,670.80 : x
  2. Step 2: Convert to fraction form
    141,856,808.40/212,785,212.60 = 81,222,670.80/x
  3. Step 3: Cross multiply
    141,856,808.40x = 212,785,212.60 × 81,222,670.80
  4. Step 4: Simplify right side
    141,856,808.40x = 17,282,983,274,117,810
  5. Step 5: Solve for x
    x = 17,282,983,274,117,810/141,856,808.40
  6. Step 6: Final answer
    x = 121,834,006.20

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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.