Home / 145,324.17-200,545.59-81,672.75

Finding the Fourth Proportional to 145,324.17, 200,545.59 and 81,672.75

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Solution

The fourth proportional to 145,324.17, 200,545.59 and 81,672.75 is: 112,707.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,324.17 : 200,545.59 = 81,672.75 : x
  2. Step 2: Convert to fraction form
    145,324.17/200,545.59 = 81,672.75/x
  3. Step 3: Cross multiply
    145,324.17x = 200,545.59 × 81,672.75
  4. Step 4: Simplify right side
    145,324.17x = 16,379,109,835.67
  5. Step 5: Solve for x
    x = 16,379,109,835.67/145,324.17
  6. Step 6: Final answer
    x = 112,707.40

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1.5x scale

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.