Home / 145,162,812.40-217,744,218.60-72,603,401.20

Finding the Fourth Proportional to 145,162,812.40, 217,744,218.60 and 72,603,401.20

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Solution

The fourth proportional to 145,162,812.40, 217,744,218.60 and 72,603,401.20 is: 108,905,101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,162,812.40 : 217,744,218.60 = 72,603,401.20 : x
  2. Step 2: Convert to fraction form
    145,162,812.40/217,744,218.60 = 72,603,401.20/x
  3. Step 3: Cross multiply
    145,162,812.40x = 217,744,218.60 × 72,603,401.20
  4. Step 4: Simplify right side
    145,162,812.40x = 15,808,970,861,996,302
  5. Step 5: Solve for x
    x = 15,808,970,861,996,302/145,162,812.40
  6. Step 6: Final answer
    x = 108,905,101.80

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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.