Home / 130,765.16-180,459.42-74,185.04

Finding the Fourth Proportional to 130,765.16, 180,459.42 and 74,185.04

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Solution

The fourth proportional to 130,765.16, 180,459.42 and 74,185.04 is: 102,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,765.16 : 180,459.42 = 74,185.04 : x
  2. Step 2: Convert to fraction form
    130,765.16/180,459.42 = 74,185.04/x
  3. Step 3: Cross multiply
    130,765.16x = 180,459.42 × 74,185.04
  4. Step 4: Simplify right side
    130,765.16x = 13,387,389,291.08
  5. Step 5: Solve for x
    x = 13,387,389,291.08/130,765.16
  6. Step 6: Final answer
    x = 102,377.34

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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.