Home / 145,154,166.60-217,749,912.30-72,408,131.40

Finding the Fourth Proportional to 145,154,166.60, 217,749,912.30 and 72,408,131.40

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Solution

The fourth proportional to 145,154,166.60, 217,749,912.30 and 72,408,131.40 is: 108,621,506.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,154,166.60 : 217,749,912.30 = 72,408,131.40 : x
  2. Step 2: Convert to fraction form
    145,154,166.60/217,749,912.30 = 72,408,131.40/x
  3. Step 3: Cross multiply
    145,154,166.60x = 217,749,912.30 × 72,408,131.40
  4. Step 4: Simplify right side
    145,154,166.60x = 15,766,864,262,156,878
  5. Step 5: Solve for x
    x = 15,766,864,262,156,878/145,154,166.60
  6. Step 6: Final answer
    x = 108,621,506.58

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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.