Home / 121,950,518.40-168,059,137.80-119,709,018.36

Finding the Fourth Proportional to 121,950,518.40, 168,059,137.80 and 119,709,018.36

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Solution

The fourth proportional to 121,950,518.40, 168,059,137.80 and 119,709,018.36 is: 164,970,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,950,518.40 : 168,059,137.80 = 119,709,018.36 : x
  2. Step 2: Convert to fraction form
    121,950,518.40/168,059,137.80 = 119,709,018.36/x
  3. Step 3: Cross multiply
    121,950,518.40x = 168,059,137.80 × 119,709,018.36
  4. Step 4: Simplify right side
    121,950,518.40x = 20,118,194,412,465,972
  5. Step 5: Solve for x
    x = 20,118,194,412,465,972/121,950,518.40
  6. Step 6: Final answer
    x = 164,970,142.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.