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Finding the Third Proportional to 72,190,030 and 155,886,066

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Solution

The third proportional to 72,190,030 and 155,886,066 is: 336,618,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,190,030 : 155,886,066 = 155,886,066 : x
  2. Step 2: Convert to fraction form
    72,190,030/155,886,066 = 155,886,066/x
  3. Step 3: Cross multiply
    72,190,030x = 155,886,066 × 155,886,066
  4. Step 4: Simplify right side
    72,190,030x = 24,300,465,572,956,356
  5. Step 5: Solve for x
    x = 24,300,465,572,956,356/72,190,030
  6. Step 6: Final answer
    x = 336,618,028.46

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.