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Finding the Fourth Proportional to 104,703.40, 156,671.10 and 77,055.40

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Solution

The fourth proportional to 104,703.40, 156,671.10 and 77,055.40 is: 115,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,703.40 : 156,671.10 = 77,055.40 : x
  2. Step 2: Convert to fraction form
    104,703.40/156,671.10 = 77,055.40/x
  3. Step 3: Cross multiply
    104,703.40x = 156,671.10 × 77,055.40
  4. Step 4: Simplify right side
    104,703.40x = 12,072,354,278.94
  5. Step 5: Solve for x
    x = 12,072,354,278.94/104,703.40
  6. Step 6: Final answer
    x = 115,300.50

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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.