Home / 130,814.76-180,558.87-77,135.52

Finding the Fourth Proportional to 130,814.76, 180,558.87 and 77,135.52

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Solution

The fourth proportional to 130,814.76, 180,558.87 and 77,135.52 is: 106,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,814.76 : 180,558.87 = 77,135.52 : x
  2. Step 2: Convert to fraction form
    130,814.76/180,558.87 = 77,135.52/x
  3. Step 3: Cross multiply
    130,814.76x = 180,558.87 × 77,135.52
  4. Step 4: Simplify right side
    130,814.76x = 13,927,502,328.06
  5. Step 5: Solve for x
    x = 13,927,502,328.06/130,814.76
  6. Step 6: Final answer
    x = 106,467.36

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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.