Home / 129,946.07-179,337.65-78,947.06

Finding the Fourth Proportional to 129,946.07, 179,337.65 and 78,947.06

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Solution

The fourth proportional to 129,946.07, 179,337.65 and 78,947.06 is: 108,954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,946.07 : 179,337.65 = 78,947.06 : x
  2. Step 2: Convert to fraction form
    129,946.07/179,337.65 = 78,947.06/x
  3. Step 3: Cross multiply
    129,946.07x = 179,337.65 × 78,947.06
  4. Step 4: Simplify right side
    129,946.07x = 14,158,178,923.39
  5. Step 5: Solve for x
    x = 14,158,178,923.39/129,946.07
  6. Step 6: Final answer
    x = 108,954.27

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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.