Home / 139,389,570.95-192,357,767.39-77,508,580.91

Finding the Fourth Proportional to 139,389,570.95, 192,357,767.39 and 77,508,580.91

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Solution

The fourth proportional to 139,389,570.95, 192,357,767.39 and 77,508,580.91 is: 106,961,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,389,570.95 : 192,357,767.39 = 77,508,580.91 : x
  2. Step 2: Convert to fraction form
    139,389,570.95/192,357,767.39 = 77,508,580.91/x
  3. Step 3: Cross multiply
    139,389,570.95x = 192,357,767.39 × 77,508,580.91
  4. Step 4: Simplify right side
    139,389,570.95x = 14,909,377,576,065,442
  5. Step 5: Solve for x
    x = 14,909,377,576,065,442/139,389,570.95
  6. Step 6: Final answer
    x = 106,961,930.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.