Home / 130,577.18-180,193.96-76,139.51

Finding the Fourth Proportional to 130,577.18, 180,193.96 and 76,139.51

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Solution

The fourth proportional to 130,577.18, 180,193.96 and 76,139.51 is: 105,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,577.18 : 180,193.96 = 76,139.51 : x
  2. Step 2: Convert to fraction form
    130,577.18/180,193.96 = 76,139.51/x
  3. Step 3: Cross multiply
    130,577.18x = 180,193.96 × 76,139.51
  4. Step 4: Simplify right side
    130,577.18x = 13,719,879,819.36
  5. Step 5: Solve for x
    x = 13,719,879,819.36/130,577.18
  6. Step 6: Final answer
    x = 105,071.04

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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.