Home / 210,115-289,982.98-116,990.10

Finding the Fourth Proportional to 210,115, 289,982.98 and 116,990.10

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Solution

The fourth proportional to 210,115, 289,982.98 and 116,990.10 is: 161,459.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,115 : 289,982.98 = 116,990.10 : x
  2. Step 2: Convert to fraction form
    210,115/289,982.98 = 116,990.10/x
  3. Step 3: Cross multiply
    210,115x = 289,982.98 × 116,990.10
  4. Step 4: Simplify right side
    210,115x = 33,925,137,828.50
  5. Step 5: Solve for x
    x = 33,925,137,828.50/210,115
  6. Step 6: Final answer
    x = 161,459.86

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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.