Home / 102,290.32-153,431.85-31,210.09

Finding the Fourth Proportional to 102,290.32, 153,431.85 and 31,210.09

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Solution

The fourth proportional to 102,290.32, 153,431.85 and 31,210.09 is: 46,814.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,290.32 : 153,431.85 = 31,210.09 : x
  2. Step 2: Convert to fraction form
    102,290.32/153,431.85 = 31,210.09/x
  3. Step 3: Cross multiply
    102,290.32x = 153,431.85 × 31,210.09
  4. Step 4: Simplify right side
    102,290.32x = 4,788,621,580.82
  5. Step 5: Solve for x
    x = 4,788,621,580.82/102,290.32
  6. Step 6: Final answer
    x = 46,814.02

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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.