Home / 86,730.60-129,468.36-80,237.64

Finding the Fourth Proportional to 86,730.60, 129,468.36 and 80,237.64

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Solution

The fourth proportional to 86,730.60, 129,468.36 and 80,237.64 is: 119,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,730.60 : 129,468.36 = 80,237.64 : x
  2. Step 2: Convert to fraction form
    86,730.60/129,468.36 = 80,237.64/x
  3. Step 3: Cross multiply
    86,730.60x = 129,468.36 × 80,237.64
  4. Step 4: Simplify right side
    86,730.60x = 10,388,235,661.07
  5. Step 5: Solve for x
    x = 10,388,235,661.07/86,730.60
  6. Step 6: Final answer
    x = 119,775.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.