Home / 131,123,130.90-196,803,669.15-66,471,911.70

Finding the Fourth Proportional to 131,123,130.90, 196,803,669.15 and 66,471,911.70

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Solution

The fourth proportional to 131,123,130.90, 196,803,669.15 and 66,471,911.70 is: 99,768,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,123,130.90 : 196,803,669.15 = 66,471,911.70 : x
  2. Step 2: Convert to fraction form
    131,123,130.90/196,803,669.15 = 66,471,911.70/x
  3. Step 3: Cross multiply
    131,123,130.90x = 196,803,669.15 × 66,471,911.70
  4. Step 4: Simplify right side
    131,123,130.90x = 13,081,916,117,974,816
  5. Step 5: Solve for x
    x = 13,081,916,117,974,816/131,123,130.90
  6. Step 6: Final answer
    x = 99,768,179.94

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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.