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Finding the Fourth Proportional to 130,152.57, 179,623.79 and 79,168.81

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Solution

The fourth proportional to 130,152.57, 179,623.79 and 79,168.81 is: 109,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,152.57 : 179,623.79 = 79,168.81 : x
  2. Step 2: Convert to fraction form
    130,152.57/179,623.79 = 79,168.81/x
  3. Step 3: Cross multiply
    130,152.57x = 179,623.79 × 79,168.81
  4. Step 4: Simplify right side
    130,152.57x = 14,220,601,701.99
  5. Step 5: Solve for x
    x = 14,220,601,701.99/130,152.57
  6. Step 6: Final answer
    x = 109,261.02

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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.