Home / 99,854,516.20-149,613,812.70-85,409,818.60

Finding the Fourth Proportional to 99,854,516.20, 149,613,812.70 and 85,409,818.60

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Solution

The fourth proportional to 99,854,516.20, 149,613,812.70 and 85,409,818.60 is: 127,971,063.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,854,516.20 : 149,613,812.70 = 85,409,818.60 : x
  2. Step 2: Convert to fraction form
    99,854,516.20/149,613,812.70 = 85,409,818.60/x
  3. Step 3: Cross multiply
    99,854,516.20x = 149,613,812.70 × 85,409,818.60
  4. Step 4: Simplify right side
    99,854,516.20x = 12,778,488,602,761,374
  5. Step 5: Solve for x
    x = 12,778,488,602,761,374/99,854,516.20
  6. Step 6: Final answer
    x = 127,971,063.19

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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.