Home / 115,119,390.40-172,455,136.80-69,545,809.60

Finding the Fourth Proportional to 115,119,390.40, 172,455,136.80 and 69,545,809.60

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Solution

The fourth proportional to 115,119,390.40, 172,455,136.80 and 69,545,809.60 is: 104,183,422.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,119,390.40 : 172,455,136.80 = 69,545,809.60 : x
  2. Step 2: Convert to fraction form
    115,119,390.40/172,455,136.80 = 69,545,809.60/x
  3. Step 3: Cross multiply
    115,119,390.40x = 172,455,136.80 × 69,545,809.60
  4. Step 4: Simplify right side
    115,119,390.40x = 11,993,532,108,434,754
  5. Step 5: Solve for x
    x = 11,993,532,108,434,754/115,119,390.40
  6. Step 6: Final answer
    x = 104,183,422.68

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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.