Home / 143,564,691.67-198,118,266.73-78,374,595.67

Finding the Fourth Proportional to 143,564,691.67, 198,118,266.73 and 78,374,595.67

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Solution

The fourth proportional to 143,564,691.67, 198,118,266.73 and 78,374,595.67 is: 108,156,391.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,564,691.67 : 198,118,266.73 = 78,374,595.67 : x
  2. Step 2: Convert to fraction form
    143,564,691.67/198,118,266.73 = 78,374,595.67/x
  3. Step 3: Cross multiply
    143,564,691.67x = 198,118,266.73 × 78,374,595.67
  4. Step 4: Simplify right side
    143,564,691.67x = 15,527,439,049,804,962
  5. Step 5: Solve for x
    x = 15,527,439,049,804,962/143,564,691.67
  6. Step 6: Final answer
    x = 108,156,391.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.