Home / 82,130.80-122,602.14-72,166.30

Finding the Fourth Proportional to 82,130.80, 122,602.14 and 72,166.30

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Solution

The fourth proportional to 82,130.80, 122,602.14 and 72,166.30 is: 107,727.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,130.80 : 122,602.14 = 72,166.30 : x
  2. Step 2: Convert to fraction form
    82,130.80/122,602.14 = 72,166.30/x
  3. Step 3: Cross multiply
    82,130.80x = 122,602.14 × 72,166.30
  4. Step 4: Simplify right side
    82,130.80x = 8,847,742,815.88
  5. Step 5: Solve for x
    x = 8,847,742,815.88/82,130.80
  6. Step 6: Final answer
    x = 107,727.46

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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.