Home / 145,880,949.40-218,821,424.10-85,265,474.20

Finding the Fourth Proportional to 145,880,949.40, 218,821,424.10 and 85,265,474.20

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Solution

The fourth proportional to 145,880,949.40, 218,821,424.10 and 85,265,474.20 is: 127,898,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,880,949.40 : 218,821,424.10 = 85,265,474.20 : x
  2. Step 2: Convert to fraction form
    145,880,949.40/218,821,424.10 = 85,265,474.20/x
  3. Step 3: Cross multiply
    145,880,949.40x = 218,821,424.10 × 85,265,474.20
  4. Step 4: Simplify right side
    145,880,949.40x = 18,657,912,491,005,808
  5. Step 5: Solve for x
    x = 18,657,912,491,005,808/145,880,949.40
  6. Step 6: Final answer
    x = 127,898,211.30

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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.