Home / 99,778,861.60-149,780,266.80-77,160,032.80

Finding the Fourth Proportional to 99,778,861.60, 149,780,266.80 and 77,160,032.80

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Solution

The fourth proportional to 99,778,861.60, 149,780,266.80 and 77,160,032.80 is: 115,826,640.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,778,861.60 : 149,780,266.80 = 77,160,032.80 : x
  2. Step 2: Convert to fraction form
    99,778,861.60/149,780,266.80 = 77,160,032.80/x
  3. Step 3: Cross multiply
    99,778,861.60x = 149,780,266.80 × 77,160,032.80
  4. Step 4: Simplify right side
    99,778,861.60x = 11,557,050,299,080,752
  5. Step 5: Solve for x
    x = 11,557,050,299,080,752/99,778,861.60
  6. Step 6: Final answer
    x = 115,826,640.17

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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.