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Finding the Fourth Proportional to 128,717,071.20, 193,075,606.80 and 128,717,071.20

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Solution

The fourth proportional to 128,717,071.20, 193,075,606.80 and 128,717,071.20 is: 193,075,606.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,717,071.20 : 193,075,606.80 = 128,717,071.20 : x
  2. Step 2: Convert to fraction form
    128,717,071.20/193,075,606.80 = 128,717,071.20/x
  3. Step 3: Cross multiply
    128,717,071.20x = 193,075,606.80 × 128,717,071.20
  4. Step 4: Simplify right side
    128,717,071.20x = 24,852,126,627,458,808
  5. Step 5: Solve for x
    x = 24,852,126,627,458,808/128,717,071.20
  6. Step 6: Final answer
    x = 193,075,606.80

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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.