Home / 130,838.49-180,580.68-77,120.37

Finding the Fourth Proportional to 130,838.49, 180,580.68 and 77,120.37

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Solution

The fourth proportional to 130,838.49, 180,580.68 and 77,120.37 is: 106,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,838.49 : 180,580.68 = 77,120.37 : x
  2. Step 2: Convert to fraction form
    130,838.49/180,580.68 = 77,120.37/x
  3. Step 3: Cross multiply
    130,838.49x = 180,580.68 × 77,120.37
  4. Step 4: Simplify right side
    130,838.49x = 13,926,448,856.45
  5. Step 5: Solve for x
    x = 13,926,448,856.45/130,838.49
  6. Step 6: Final answer
    x = 106,440.00

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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.