Home / 190,669.95-285,956.93-78,381.47

Finding the Fourth Proportional to 190,669.95, 285,956.93 and 78,381.47

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Solution

The fourth proportional to 190,669.95, 285,956.93 and 78,381.47 is: 117,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,669.95 : 285,956.93 = 78,381.47 : x
  2. Step 2: Convert to fraction form
    190,669.95/285,956.93 = 78,381.47/x
  3. Step 3: Cross multiply
    190,669.95x = 285,956.93 × 78,381.47
  4. Step 4: Simplify right side
    190,669.95x = 22,413,725,440.93
  5. Step 5: Solve for x
    x = 22,413,725,440.93/190,669.95
  6. Step 6: Final answer
    x = 117,552.48

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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.