Home / 130,530.34-180,128.37-76,818.52

Finding the Fourth Proportional to 130,530.34, 180,128.37 and 76,818.52

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Solution

The fourth proportional to 130,530.34, 180,128.37 and 76,818.52 is: 106,007.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,530.34 : 180,128.37 = 76,818.52 : x
  2. Step 2: Convert to fraction form
    130,530.34/180,128.37 = 76,818.52/x
  3. Step 3: Cross multiply
    130,530.34x = 180,128.37 × 76,818.52
  4. Step 4: Simplify right side
    130,530.34x = 13,837,194,793.41
  5. Step 5: Solve for x
    x = 13,837,194,793.41/130,530.34
  6. Step 6: Final answer
    x = 106,007.50

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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.