Home / 145,529,999.80-218,294,999.70-72,758,012.20

Finding the Fourth Proportional to 145,529,999.80, 218,294,999.70 and 72,758,012.20

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Solution

The fourth proportional to 145,529,999.80, 218,294,999.70 and 72,758,012.20 is: 109,137,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,529,999.80 : 218,294,999.70 = 72,758,012.20 : x
  2. Step 2: Convert to fraction form
    145,529,999.80/218,294,999.70 = 72,758,012.20/x
  3. Step 3: Cross multiply
    145,529,999.80x = 218,294,999.70 × 72,758,012.20
  4. Step 4: Simplify right side
    145,529,999.80x = 15,882,710,251,371,596
  5. Step 5: Solve for x
    x = 15,882,710,251,371,596/145,529,999.80
  6. Step 6: Final answer
    x = 109,137,018.30

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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.