Home / 145,637.88-200,980.74-81,976.68

Finding the Fourth Proportional to 145,637.88, 200,980.74 and 81,976.68

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Solution

The fourth proportional to 145,637.88, 200,980.74 and 81,976.68 is: 113,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,637.88 : 200,980.74 = 81,976.68 : x
  2. Step 2: Convert to fraction form
    145,637.88/200,980.74 = 81,976.68/x
  3. Step 3: Cross multiply
    145,637.88x = 200,980.74 × 81,976.68
  4. Step 4: Simplify right side
    145,637.88x = 16,475,733,809.14
  5. Step 5: Solve for x
    x = 16,475,733,809.14/145,637.88
  6. Step 6: Final answer
    x = 113,128.08

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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.