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Finding the Fourth Proportional to 130,957.44, 180,721.44 and 74,368.80

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Solution

The fourth proportional to 130,957.44, 180,721.44 and 74,368.80 is: 102,629.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,957.44 : 180,721.44 = 74,368.80 : x
  2. Step 2: Convert to fraction form
    130,957.44/180,721.44 = 74,368.80/x
  3. Step 3: Cross multiply
    130,957.44x = 180,721.44 × 74,368.80
  4. Step 4: Simplify right side
    130,957.44x = 13,440,036,627.07
  5. Step 5: Solve for x
    x = 13,440,036,627.07/130,957.44
  6. Step 6: Final answer
    x = 102,629.04

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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.