Home / 163,513.10-245,306.10-128,083.70

Finding the Fourth Proportional to 163,513.10, 245,306.10 and 128,083.70

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Solution

The fourth proportional to 163,513.10, 245,306.10 and 128,083.70 is: 192,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,513.10 : 245,306.10 = 128,083.70 : x
  2. Step 2: Convert to fraction form
    163,513.10/245,306.10 = 128,083.70/x
  3. Step 3: Cross multiply
    163,513.10x = 245,306.10 × 128,083.70
  4. Step 4: Simplify right side
    163,513.10x = 31,419,712,920.57
  5. Step 5: Solve for x
    x = 31,419,712,920.57/163,513.10
  6. Step 6: Final answer
    x = 192,154.10

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1.5x scale

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.