Home / 149,865,483.18-206,803,867.84-87,137,130.85

Finding the Fourth Proportional to 149,865,483.18, 206,803,867.84 and 87,137,130.85

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Solution

The fourth proportional to 149,865,483.18, 206,803,867.84 and 87,137,130.85 is: 120,243,136.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,865,483.18 : 206,803,867.84 = 87,137,130.85 : x
  2. Step 2: Convert to fraction form
    149,865,483.18/206,803,867.84 = 87,137,130.85/x
  3. Step 3: Cross multiply
    149,865,483.18x = 206,803,867.84 × 87,137,130.85
  4. Step 4: Simplify right side
    149,865,483.18x = 18,020,295,692,300,848
  5. Step 5: Solve for x
    x = 18,020,295,692,300,848/149,865,483.18
  6. Step 6: Final answer
    x = 120,243,136.11

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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.