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Finding the Fourth Proportional to 130,276.58, 179,784.90 and 72,915.44

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Solution

The fourth proportional to 130,276.58, 179,784.90 and 72,915.44 is: 100,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,276.58 : 179,784.90 = 72,915.44 : x
  2. Step 2: Convert to fraction form
    130,276.58/179,784.90 = 72,915.44/x
  3. Step 3: Cross multiply
    130,276.58x = 179,784.90 × 72,915.44
  4. Step 4: Simplify right side
    130,276.58x = 13,109,094,189.93
  5. Step 5: Solve for x
    x = 13,109,094,189.93/130,276.58
  6. Step 6: Final answer
    x = 100,625.11

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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.