Home / 210,018.80-314,826.60-69,705.20

Finding the Fourth Proportional to 210,018.80, 314,826.60 and 69,705.20

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Solution

The fourth proportional to 210,018.80, 314,826.60 and 69,705.20 is: 104,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,018.80 : 314,826.60 = 69,705.20 : x
  2. Step 2: Convert to fraction form
    210,018.80/314,826.60 = 69,705.20/x
  3. Step 3: Cross multiply
    210,018.80x = 314,826.60 × 69,705.20
  4. Step 4: Simplify right side
    210,018.80x = 21,945,051,118.32
  5. Step 5: Solve for x
    x = 21,945,051,118.32/210,018.80
  6. Step 6: Final answer
    x = 104,490.89

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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.