Home / 122,008,152.49-168,308,993.10-77,908,784.65

Finding the Fourth Proportional to 122,008,152.49, 168,308,993.10 and 77,908,784.65

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Solution

The fourth proportional to 122,008,152.49, 168,308,993.10 and 77,908,784.65 is: 107,474,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,008,152.49 : 168,308,993.10 = 77,908,784.65 : x
  2. Step 2: Convert to fraction form
    122,008,152.49/168,308,993.10 = 77,908,784.65/x
  3. Step 3: Cross multiply
    122,008,152.49x = 168,308,993.10 × 77,908,784.65
  4. Step 4: Simplify right side
    122,008,152.49x = 13,112,749,097,957,620
  5. Step 5: Solve for x
    x = 13,112,749,097,957,620/122,008,152.49
  6. Step 6: Final answer
    x = 107,474,368.15

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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.