Home / 130,981.32-180,754.46-74,392.70

Finding the Fourth Proportional to 130,981.32, 180,754.46 and 74,392.70

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Solution

The fourth proportional to 130,981.32, 180,754.46 and 74,392.70 is: 102,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,981.32 : 180,754.46 = 74,392.70 : x
  2. Step 2: Convert to fraction form
    130,981.32/180,754.46 = 74,392.70/x
  3. Step 3: Cross multiply
    130,981.32x = 180,754.46 × 74,392.70
  4. Step 4: Simplify right side
    130,981.32x = 13,446,811,040.71
  5. Step 5: Solve for x
    x = 13,446,811,040.71/130,981.32
  6. Step 6: Final answer
    x = 102,662.05

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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.