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Finding the Fourth Proportional to 123,660,010.40, 172,897,266.40 and 123,660,010.40

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Solution

The fourth proportional to 123,660,010.40, 172,897,266.40 and 123,660,010.40 is: 172,897,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,660,010.40 : 172,897,266.40 = 123,660,010.40 : x
  2. Step 2: Convert to fraction form
    123,660,010.40/172,897,266.40 = 123,660,010.40/x
  3. Step 3: Cross multiply
    123,660,010.40x = 172,897,266.40 × 123,660,010.40
  4. Step 4: Simplify right side
    123,660,010.40x = 21,380,477,761,155,572
  5. Step 5: Solve for x
    x = 21,380,477,761,155,572/123,660,010.40
  6. Step 6: Final answer
    x = 172,897,266.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.