Home / 130,907.83-180,655.19-72,770.02

Finding the Fourth Proportional to 130,907.83, 180,655.19 and 72,770.02

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Solution

The fourth proportional to 130,907.83, 180,655.19 and 72,770.02 is: 100,423.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,907.83 : 180,655.19 = 72,770.02 : x
  2. Step 2: Convert to fraction form
    130,907.83/180,655.19 = 72,770.02/x
  3. Step 3: Cross multiply
    130,907.83x = 180,655.19 × 72,770.02
  4. Step 4: Simplify right side
    130,907.83x = 13,146,281,698.44
  5. Step 5: Solve for x
    x = 13,146,281,698.44/130,907.83
  6. Step 6: Final answer
    x = 100,423.96

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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.