Home / 147,619,731.80-221,429,597.70-86,145,786.20

Finding the Fourth Proportional to 147,619,731.80, 221,429,597.70 and 86,145,786.20

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Solution

The fourth proportional to 147,619,731.80, 221,429,597.70 and 86,145,786.20 is: 129,218,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,619,731.80 : 221,429,597.70 = 86,145,786.20 : x
  2. Step 2: Convert to fraction form
    147,619,731.80/221,429,597.70 = 86,145,786.20/x
  3. Step 3: Cross multiply
    147,619,731.80x = 221,429,597.70 × 86,145,786.20
  4. Step 4: Simplify right side
    147,619,731.80x = 19,075,226,781,816,212
  5. Step 5: Solve for x
    x = 19,075,226,781,816,212/147,619,731.80
  6. Step 6: Final answer
    x = 129,218,679.30

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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.