Home / 154,579,809.80-231,897,708.30-77,709,384.20

Finding the Fourth Proportional to 154,579,809.80, 231,897,708.30 and 77,709,384.20

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Solution

The fourth proportional to 154,579,809.80, 231,897,708.30 and 77,709,384.20 is: 116,578,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,579,809.80 : 231,897,708.30 = 77,709,384.20 : x
  2. Step 2: Convert to fraction form
    154,579,809.80/231,897,708.30 = 77,709,384.20/x
  3. Step 3: Cross multiply
    154,579,809.80x = 231,897,708.30 × 77,709,384.20
  4. Step 4: Simplify right side
    154,579,809.80x = 18,020,628,109,384,232
  5. Step 5: Solve for x
    x = 18,020,628,109,384,232/154,579,809.80
  6. Step 6: Final answer
    x = 116,578,149.07

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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.