Home / 142,118,195.20-212,893,857.60-81,463,062.40

Finding the Fourth Proportional to 142,118,195.20, 212,893,857.60 and 81,463,062.40

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Solution

The fourth proportional to 142,118,195.20, 212,893,857.60 and 81,463,062.40 is: 122,032,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,118,195.20 : 212,893,857.60 = 81,463,062.40 : x
  2. Step 2: Convert to fraction form
    142,118,195.20/212,893,857.60 = 81,463,062.40/x
  3. Step 3: Cross multiply
    142,118,195.20x = 212,893,857.60 × 81,463,062.40
  4. Step 4: Simplify right side
    142,118,195.20x = 17,342,985,606,245,516
  5. Step 5: Solve for x
    x = 17,342,985,606,245,516/142,118,195.20
  6. Step 6: Final answer
    x = 122,032,126.72

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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.