Home / 130,502.39-180,090.23-76,790.88

Finding the Fourth Proportional to 130,502.39, 180,090.23 and 76,790.88

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Solution

The fourth proportional to 130,502.39, 180,090.23 and 76,790.88 is: 105,969.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,502.39 : 180,090.23 = 76,790.88 : x
  2. Step 2: Convert to fraction form
    130,502.39/180,090.23 = 76,790.88/x
  3. Step 3: Cross multiply
    130,502.39x = 180,090.23 × 76,790.88
  4. Step 4: Simplify right side
    130,502.39x = 13,829,286,857.15
  5. Step 5: Solve for x
    x = 13,829,286,857.15/130,502.39
  6. Step 6: Final answer
    x = 105,969.61

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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.