Home / 130,549.08-180,174.06-73,978.68

Finding the Fourth Proportional to 130,549.08, 180,174.06 and 73,978.68

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Solution

The fourth proportional to 130,549.08, 180,174.06 and 73,978.68 is: 102,099.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,549.08 : 180,174.06 = 73,978.68 : x
  2. Step 2: Convert to fraction form
    130,549.08/180,174.06 = 73,978.68/x
  3. Step 3: Cross multiply
    130,549.08x = 180,174.06 × 73,978.68
  4. Step 4: Simplify right side
    130,549.08x = 13,329,039,129.04
  5. Step 5: Solve for x
    x = 13,329,039,129.04/130,549.08
  6. Step 6: Final answer
    x = 102,099.83

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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.