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Finding the Fourth Proportional to 124,698, 172,021.58 and 73,686.06

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Solution

The fourth proportional to 124,698, 172,021.58 and 73,686.06 is: 101,650.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,698 : 172,021.58 = 73,686.06 : x
  2. Step 2: Convert to fraction form
    124,698/172,021.58 = 73,686.06/x
  3. Step 3: Cross multiply
    124,698x = 172,021.58 × 73,686.06
  4. Step 4: Simplify right side
    124,698x = 12,675,592,465.17
  5. Step 5: Solve for x
    x = 12,675,592,465.17/124,698
  6. Step 6: Final answer
    x = 101,650.33

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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.