Home / 127,638,261.68-191,312,160.24-77,672,881.86

Finding the Fourth Proportional to 127,638,261.68, 191,312,160.24 and 77,672,881.86

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Solution

The fourth proportional to 127,638,261.68, 191,312,160.24 and 77,672,881.86 is: 116,420,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638,261.68 : 191,312,160.24 = 77,672,881.86 : x
  2. Step 2: Convert to fraction form
    127,638,261.68/191,312,160.24 = 77,672,881.86/x
  3. Step 3: Cross multiply
    127,638,261.68x = 191,312,160.24 × 77,672,881.86
  4. Step 4: Simplify right side
    127,638,261.68x = 14,859,766,820,702,910
  5. Step 5: Solve for x
    x = 14,859,766,820,702,910/127,638,261.68
  6. Step 6: Final answer
    x = 116,420,943.26

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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.