Home / 68,688,138.30-103,032,207.45-68,209,841.40

Finding the Fourth Proportional to 68,688,138.30, 103,032,207.45 and 68,209,841.40

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Solution

The fourth proportional to 68,688,138.30, 103,032,207.45 and 68,209,841.40 is: 102,314,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,688,138.30 : 103,032,207.45 = 68,209,841.40 : x
  2. Step 2: Convert to fraction form
    68,688,138.30/103,032,207.45 = 68,209,841.40/x
  3. Step 3: Cross multiply
    68,688,138.30x = 103,032,207.45 × 68,209,841.40
  4. Step 4: Simplify right side
    68,688,138.30x = 7,027,810,529,256,399
  5. Step 5: Solve for x
    x = 7,027,810,529,256,399/68,688,138.30
  6. Step 6: Final answer
    x = 102,314,762.10

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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.