Home / 172,509,840.81-258,845,567.24-85,023,665.87

Finding the Fourth Proportional to 172,509,840.81, 258,845,567.24 and 85,023,665.87

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Solution

The fourth proportional to 172,509,840.81, 258,845,567.24 and 85,023,665.87 is: 127,575,325.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,509,840.81 : 258,845,567.24 = 85,023,665.87 : x
  2. Step 2: Convert to fraction form
    172,509,840.81/258,845,567.24 = 85,023,665.87/x
  3. Step 3: Cross multiply
    172,509,840.81x = 258,845,567.24 × 85,023,665.87
  4. Step 4: Simplify right side
    172,509,840.81x = 22,007,999,019,862,708
  5. Step 5: Solve for x
    x = 22,007,999,019,862,708/172,509,840.81
  6. Step 6: Final answer
    x = 127,575,325.07

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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.