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Finding the Fourth Proportional to 122,689,603.20, 183,878,107.20 and 65,209,411.20

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Solution

The fourth proportional to 122,689,603.20, 183,878,107.20 and 65,209,411.20 is: 97,731,044.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,689,603.20 : 183,878,107.20 = 65,209,411.20 : x
  2. Step 2: Convert to fraction form
    122,689,603.20/183,878,107.20 = 65,209,411.20/x
  3. Step 3: Cross multiply
    122,689,603.20x = 183,878,107.20 × 65,209,411.20
  4. Step 4: Simplify right side
    122,689,603.20x = 11,990,583,103,082,480
  5. Step 5: Solve for x
    x = 11,990,583,103,082,480/122,689,603.20
  6. Step 6: Final answer
    x = 97,731,044.77

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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.