Home / 127,413,644.61-190,999,379.58-81,225,885.87

Finding the Fourth Proportional to 127,413,644.61, 190,999,379.58 and 81,225,885.87

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Solution

The fourth proportional to 127,413,644.61, 190,999,379.58 and 81,225,885.87 is: 121,761,635.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,413,644.61 : 190,999,379.58 = 81,225,885.87 : x
  2. Step 2: Convert to fraction form
    127,413,644.61/190,999,379.58 = 81,225,885.87/x
  3. Step 3: Cross multiply
    127,413,644.61x = 190,999,379.58 × 81,225,885.87
  4. Step 4: Simplify right side
    127,413,644.61x = 15,514,093,807,005,890
  5. Step 5: Solve for x
    x = 15,514,093,807,005,890/127,413,644.61
  6. Step 6: Final answer
    x = 121,761,635.93

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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.