Home / 142,118,037.20-212,893,620.60-81,462,904.40

Finding the Fourth Proportional to 142,118,037.20, 212,893,620.60 and 81,462,904.40

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Solution

The fourth proportional to 142,118,037.20, 212,893,620.60 and 81,462,904.40 is: 122,031,889.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,118,037.20 : 212,893,620.60 = 81,462,904.40 : x
  2. Step 2: Convert to fraction form
    142,118,037.20/212,893,620.60 = 81,462,904.40/x
  3. Step 3: Cross multiply
    142,118,037.20x = 212,893,620.60 × 81,462,904.40
  4. Step 4: Simplify right side
    142,118,037.20x = 17,342,932,662,307,672
  5. Step 5: Solve for x
    x = 17,342,932,662,307,672/142,118,037.20
  6. Step 6: Final answer
    x = 122,031,889.86

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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.