Home / 208,030,915.60-312,096,139.80-100,236,893.20

Finding the Fourth Proportional to 208,030,915.60, 312,096,139.80 and 100,236,893.20

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Solution

The fourth proportional to 208,030,915.60, 312,096,139.80 and 100,236,893.20 is: 150,379,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,030,915.60 : 312,096,139.80 = 100,236,893.20 : x
  2. Step 2: Convert to fraction form
    208,030,915.60/312,096,139.80 = 100,236,893.20/x
  3. Step 3: Cross multiply
    208,030,915.60x = 312,096,139.80 × 100,236,893.20
  4. Step 4: Simplify right side
    208,030,915.60x = 31,283,547,433,264,872
  5. Step 5: Solve for x
    x = 31,283,547,433,264,872/208,030,915.60
  6. Step 6: Final answer
    x = 150,379,319.07

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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.