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Finding the Fourth Proportional to 142,438,647.70, 199,867,603.10 and 142,438,647.70

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Solution

The fourth proportional to 142,438,647.70, 199,867,603.10 and 142,438,647.70 is: 199,867,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,438,647.70 : 199,867,603.10 = 142,438,647.70 : x
  2. Step 2: Convert to fraction form
    142,438,647.70/199,867,603.10 = 142,438,647.70/x
  3. Step 3: Cross multiply
    142,438,647.70x = 199,867,603.10 × 142,438,647.70
  4. Step 4: Simplify right side
    142,438,647.70x = 28,468,871,104,604,324
  5. Step 5: Solve for x
    x = 28,468,871,104,604,324/142,438,647.70
  6. Step 6: Final answer
    x = 199,867,603.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.