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Finding the Fourth Proportional to 130,392.98, 179,953.72 and 73,031.40

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Solution

The fourth proportional to 130,392.98, 179,953.72 and 73,031.40 is: 100,789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,392.98 : 179,953.72 = 73,031.40 : x
  2. Step 2: Convert to fraction form
    130,392.98/179,953.72 = 73,031.40/x
  3. Step 3: Cross multiply
    130,392.98x = 179,953.72 × 73,031.40
  4. Step 4: Simplify right side
    130,392.98x = 13,142,272,106.81
  5. Step 5: Solve for x
    x = 13,142,272,106.81/130,392.98
  6. Step 6: Final answer
    x = 100,789.72

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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.