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Finding the Fourth Proportional to 84,912,323.70, 127,368,485.55 and 83,495,147.70

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Solution

The fourth proportional to 84,912,323.70, 127,368,485.55 and 83,495,147.70 is: 125,242,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912,323.70 : 127,368,485.55 = 83,495,147.70 : x
  2. Step 2: Convert to fraction form
    84,912,323.70/127,368,485.55 = 83,495,147.70/x
  3. Step 3: Cross multiply
    84,912,323.70x = 127,368,485.55 × 83,495,147.70
  4. Step 4: Simplify right side
    84,912,323.70x = 10,634,650,513,322,566
  5. Step 5: Solve for x
    x = 10,634,650,513,322,566/84,912,323.70
  6. Step 6: Final answer
    x = 125,242,721.55

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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.