Home / 210,013.20-289,946.70-129,550.68

Finding the Fourth Proportional to 210,013.20, 289,946.70 and 129,550.68

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Solution

The fourth proportional to 210,013.20, 289,946.70 and 129,550.68 is: 178,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,013.20 : 289,946.70 = 129,550.68 : x
  2. Step 2: Convert to fraction form
    210,013.20/289,946.70 = 129,550.68/x
  3. Step 3: Cross multiply
    210,013.20x = 289,946.70 × 129,550.68
  4. Step 4: Simplify right side
    210,013.20x = 37,562,792,148.76
  5. Step 5: Solve for x
    x = 37,562,792,148.76/210,013.20
  6. Step 6: Final answer
    x = 178,859.20

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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.