Home / 187,812,138.60-281,718,207.90-85,775,466.60

Finding the Fourth Proportional to 187,812,138.60, 281,718,207.90 and 85,775,466.60

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Solution

The fourth proportional to 187,812,138.60, 281,718,207.90 and 85,775,466.60 is: 128,663,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,812,138.60 : 281,718,207.90 = 85,775,466.60 : x
  2. Step 2: Convert to fraction form
    187,812,138.60/281,718,207.90 = 85,775,466.60/x
  3. Step 3: Cross multiply
    187,812,138.60x = 281,718,207.90 × 85,775,466.60
  4. Step 4: Simplify right side
    187,812,138.60x = 24,164,510,732,338,304
  5. Step 5: Solve for x
    x = 24,164,510,732,338,304/187,812,138.60
  6. Step 6: Final answer
    x = 128,663,199.90

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1.5x scale

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.