Home / 130,918.75-180,667.88-71,302.75

Finding the Fourth Proportional to 130,918.75, 180,667.88 and 71,302.75

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Solution

The fourth proportional to 130,918.75, 180,667.88 and 71,302.75 is: 98,397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,918.75 : 180,667.88 = 71,302.75 : x
  2. Step 2: Convert to fraction form
    130,918.75/180,667.88 = 71,302.75/x
  3. Step 3: Cross multiply
    130,918.75x = 180,667.88 × 71,302.75
  4. Step 4: Simplify right side
    130,918.75x = 12,882,116,324.16
  5. Step 5: Solve for x
    x = 12,882,116,324.16/130,918.75
  6. Step 6: Final answer
    x = 98,397.80

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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.