Home / 120,740.32-180,085.64-118,640.80

Finding the Fourth Proportional to 120,740.32, 180,085.64 and 118,640.80

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Solution

The fourth proportional to 120,740.32, 180,085.64 and 118,640.80 is: 176,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,740.32 : 180,085.64 = 118,640.80 : x
  2. Step 2: Convert to fraction form
    120,740.32/180,085.64 = 118,640.80/x
  3. Step 3: Cross multiply
    120,740.32x = 180,085.64 × 118,640.80
  4. Step 4: Simplify right side
    120,740.32x = 21,365,504,398.11
  5. Step 5: Solve for x
    x = 21,365,504,398.11/120,740.32
  6. Step 6: Final answer
    x = 176,954.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.