Home / 138,697,131.09-208,075,512.20-40,330,547.22

Finding the Fourth Proportional to 138,697,131.09, 208,075,512.20 and 40,330,547.22

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Solution

The fourth proportional to 138,697,131.09, 208,075,512.20 and 40,330,547.22 is: 60,504,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,697,131.09 : 208,075,512.20 = 40,330,547.22 : x
  2. Step 2: Convert to fraction form
    138,697,131.09/208,075,512.20 = 40,330,547.22/x
  3. Step 3: Cross multiply
    138,697,131.09x = 208,075,512.20 × 40,330,547.22
  4. Step 4: Simplify right side
    138,697,131.09x = 8,391,799,269,906,133
  5. Step 5: Solve for x
    x = 8,391,799,269,906,133/138,697,131.09
  6. Step 6: Final answer
    x = 60,504,490.64

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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.