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Finding the Fourth Proportional to 130,071.70, 179,527.90 and 79,073.63

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Solution

The fourth proportional to 130,071.70, 179,527.90 and 79,073.63 is: 109,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,071.70 : 179,527.90 = 79,073.63 : x
  2. Step 2: Convert to fraction form
    130,071.70/179,527.90 = 79,073.63/x
  3. Step 3: Cross multiply
    130,071.70x = 179,527.90 × 79,073.63
  4. Step 4: Simplify right side
    130,071.70x = 14,195,921,643.95
  5. Step 5: Solve for x
    x = 14,195,921,643.95/130,071.70
  6. Step 6: Final answer
    x = 109,139.20

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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.