Home / 99,856,286.60-149,784,429.90-85,243,627.40

Finding the Fourth Proportional to 99,856,286.60, 149,784,429.90 and 85,243,627.40

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Solution

The fourth proportional to 99,856,286.60, 149,784,429.90 and 85,243,627.40 is: 127,865,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856,286.60 : 149,784,429.90 = 85,243,627.40 : x
  2. Step 2: Convert to fraction form
    99,856,286.60/149,784,429.90 = 85,243,627.40/x
  3. Step 3: Cross multiply
    99,856,286.60x = 149,784,429.90 × 85,243,627.40
  4. Step 4: Simplify right side
    99,856,286.60x = 12,768,168,132,717,020
  5. Step 5: Solve for x
    x = 12,768,168,132,717,020/99,856,286.60
  6. Step 6: Final answer
    x = 127,865,441.10

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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.