Home / 120,724,132.80-166,709,981.76-76,685,320.32

Finding the Fourth Proportional to 120,724,132.80, 166,709,981.76 and 76,685,320.32

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Solution

The fourth proportional to 120,724,132.80, 166,709,981.76 and 76,685,320.32 is: 105,896,046.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,724,132.80 : 166,709,981.76 = 76,685,320.32 : x
  2. Step 2: Convert to fraction form
    120,724,132.80/166,709,981.76 = 76,685,320.32/x
  3. Step 3: Cross multiply
    120,724,132.80x = 166,709,981.76 × 76,685,320.32
  4. Step 4: Simplify right side
    120,724,132.80x = 12,784,208,351,806,956
  5. Step 5: Solve for x
    x = 12,784,208,351,806,956/120,724,132.80
  6. Step 6: Final answer
    x = 105,896,046.26

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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.