Home / 137,905.41-190,328.64-77,480.73

Finding the Fourth Proportional to 137,905.41, 190,328.64 and 77,480.73

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Solution

The fourth proportional to 137,905.41, 190,328.64 and 77,480.73 is: 106,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.41 : 190,328.64 = 77,480.73 : x
  2. Step 2: Convert to fraction form
    137,905.41/190,328.64 = 77,480.73/x
  3. Step 3: Cross multiply
    137,905.41x = 190,328.64 × 77,480.73
  4. Step 4: Simplify right side
    137,905.41x = 14,746,801,967.11
  5. Step 5: Solve for x
    x = 14,746,801,967.11/137,905.41
  6. Step 6: Final answer
    x = 106,934.18

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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.