Home / 132,856,296.40-199,284,444.60-81,572,021.20

Finding the Fourth Proportional to 132,856,296.40, 199,284,444.60 and 81,572,021.20

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Solution

The fourth proportional to 132,856,296.40, 199,284,444.60 and 81,572,021.20 is: 122,358,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,856,296.40 : 199,284,444.60 = 81,572,021.20 : x
  2. Step 2: Convert to fraction form
    132,856,296.40/199,284,444.60 = 81,572,021.20/x
  3. Step 3: Cross multiply
    132,856,296.40x = 199,284,444.60 × 81,572,021.20
  4. Step 4: Simplify right side
    132,856,296.40x = 16,256,034,939,741,426
  5. Step 5: Solve for x
    x = 16,256,034,939,741,426/132,856,296.40
  6. Step 6: Final answer
    x = 122,358,031.80

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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.