Home / 190,916.16-286,264.50-78,673.86

Finding the Fourth Proportional to 190,916.16, 286,264.50 and 78,673.86

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Solution

The fourth proportional to 190,916.16, 286,264.50 and 78,673.86 is: 117,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,916.16 : 286,264.50 = 78,673.86 : x
  2. Step 2: Convert to fraction form
    190,916.16/286,264.50 = 78,673.86/x
  3. Step 3: Cross multiply
    190,916.16x = 286,264.50 × 78,673.86
  4. Step 4: Simplify right side
    190,916.16x = 22,521,533,195.97
  5. Step 5: Solve for x
    x = 22,521,533,195.97/190,916.16
  6. Step 6: Final answer
    x = 117,965.57

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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.