Home / 208,143.40-312,215.10-103,036.20

Finding the Fourth Proportional to 208,143.40, 312,215.10 and 103,036.20

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Solution

The fourth proportional to 208,143.40, 312,215.10 and 103,036.20 is: 154,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,143.40 : 312,215.10 = 103,036.20 : x
  2. Step 2: Convert to fraction form
    208,143.40/312,215.10 = 103,036.20/x
  3. Step 3: Cross multiply
    208,143.40x = 312,215.10 × 103,036.20
  4. Step 4: Simplify right side
    208,143.40x = 32,169,457,486.62
  5. Step 5: Solve for x
    x = 32,169,457,486.62/208,143.40
  6. Step 6: Final answer
    x = 154,554.30

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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.