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Finding the Third Proportional to 86,686,430 and 127,155,885

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Solution

The third proportional to 86,686,430 and 127,155,885 is: 186,518,456.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,686,430 : 127,155,885 = 127,155,885 : x
  2. Step 2: Convert to fraction form
    86,686,430/127,155,885 = 127,155,885/x
  3. Step 3: Cross multiply
    86,686,430x = 127,155,885 × 127,155,885
  4. Step 4: Simplify right side
    86,686,430x = 16,168,619,090,133,224
  5. Step 5: Solve for x
    x = 16,168,619,090,133,224/86,686,430
  6. Step 6: Final answer
    x = 186,518,456.12

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.