Home / 171,272,905.09-257,017,430.39-72,904,455.38

Finding the Fourth Proportional to 171,272,905.09, 257,017,430.39 and 72,904,455.38

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Solution

The fourth proportional to 171,272,905.09, 257,017,430.39 and 72,904,455.38 is: 109,402,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,272,905.09 : 257,017,430.39 = 72,904,455.38 : x
  2. Step 2: Convert to fraction form
    171,272,905.09/257,017,430.39 = 72,904,455.38/x
  3. Step 3: Cross multiply
    171,272,905.09x = 257,017,430.39 × 72,904,455.38
  4. Step 4: Simplify right side
    171,272,905.09x = 18,737,715,786,028,028
  5. Step 5: Solve for x
    x = 18,737,715,786,028,028/171,272,905.09
  6. Step 6: Final answer
    x = 109,402,685.59

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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.