Home / 127,638,246.51-191,312,137.58-77,672,866.73

Finding the Fourth Proportional to 127,638,246.51, 191,312,137.58 and 77,672,866.73

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Solution

The fourth proportional to 127,638,246.51, 191,312,137.58 and 77,672,866.73 is: 116,420,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638,246.51 : 191,312,137.58 = 77,672,866.73 : x
  2. Step 2: Convert to fraction form
    127,638,246.51/191,312,137.58 = 77,672,866.73/x
  3. Step 3: Cross multiply
    127,638,246.51x = 191,312,137.58 × 77,672,866.73
  4. Step 4: Simplify right side
    127,638,246.51x = 14,859,762,164,737,838
  5. Step 5: Solve for x
    x = 14,859,762,164,737,838/127,638,246.51
  6. Step 6: Final answer
    x = 116,420,920.62

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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.