Home / 189,355,823.88-261,308,561.16-105,725,378.56

Finding the Fourth Proportional to 189,355,823.88, 261,308,561.16 and 105,725,378.56

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Solution

The fourth proportional to 189,355,823.88, 261,308,561.16 and 105,725,378.56 is: 145,899,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,355,823.88 : 261,308,561.16 = 105,725,378.56 : x
  2. Step 2: Convert to fraction form
    189,355,823.88/261,308,561.16 = 105,725,378.56/x
  3. Step 3: Cross multiply
    189,355,823.88x = 261,308,561.16 × 105,725,378.56
  4. Step 4: Simplify right side
    189,355,823.88x = 27,626,946,549,609,912
  5. Step 5: Solve for x
    x = 27,626,946,549,609,912/189,355,823.88
  6. Step 6: Final answer
    x = 145,899,640.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.