Home / 90,039.49-135,143.98-45,698.06

Finding the Fourth Proportional to 90,039.49, 135,143.98 and 45,698.06

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Solution

The fourth proportional to 90,039.49, 135,143.98 and 45,698.06 is: 68,590.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,039.49 : 135,143.98 = 45,698.06 : x
  2. Step 2: Convert to fraction form
    90,039.49/135,143.98 = 45,698.06/x
  3. Step 3: Cross multiply
    90,039.49x = 135,143.98 × 45,698.06
  4. Step 4: Simplify right side
    90,039.49x = 6,175,817,930.29
  5. Step 5: Solve for x
    x = 6,175,817,930.29/90,039.49
  6. Step 6: Final answer
    x = 68,590.11

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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.