Home / 198,685,364.70-298,368,117.45-107,986,100.70

Finding the Fourth Proportional to 198,685,364.70, 298,368,117.45 and 107,986,100.70

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Solution

The fourth proportional to 198,685,364.70, 298,368,117.45 and 107,986,100.70 is: 162,163,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,685,364.70 : 298,368,117.45 = 107,986,100.70 : x
  2. Step 2: Convert to fraction form
    198,685,364.70/298,368,117.45 = 107,986,100.70/x
  3. Step 3: Cross multiply
    198,685,364.70x = 298,368,117.45 × 107,986,100.70
  4. Step 4: Simplify right side
    198,685,364.70x = 32,219,609,576,625,128
  5. Step 5: Solve for x
    x = 32,219,609,576,625,128/198,685,364.70
  6. Step 6: Final answer
    x = 162,163,980.35

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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.