Home / 147,619,728.80-221,429,593.20-86,145,783.20

Finding the Fourth Proportional to 147,619,728.80, 221,429,593.20 and 86,145,783.20

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Solution

The fourth proportional to 147,619,728.80, 221,429,593.20 and 86,145,783.20 is: 129,218,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,619,728.80 : 221,429,593.20 = 86,145,783.20 : x
  2. Step 2: Convert to fraction form
    147,619,728.80/221,429,593.20 = 86,145,783.20/x
  3. Step 3: Cross multiply
    147,619,728.80x = 221,429,593.20 × 86,145,783.20
  4. Step 4: Simplify right side
    147,619,728.80x = 19,075,225,729,871,392
  5. Step 5: Solve for x
    x = 19,075,225,729,871,392/147,619,728.80
  6. Step 6: Final answer
    x = 129,218,674.80

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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.