Home / 220,145,643.90-330,134,485.05-66,740,715.90

Finding the Fourth Proportional to 220,145,643.90, 330,134,485.05 and 66,740,715.90

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Solution

The fourth proportional to 220,145,643.90, 330,134,485.05 and 66,740,715.90 is: 100,085,613.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,145,643.90 : 330,134,485.05 = 66,740,715.90 : x
  2. Step 2: Convert to fraction form
    220,145,643.90/330,134,485.05 = 66,740,715.90/x
  3. Step 3: Cross multiply
    220,145,643.90x = 330,134,485.05 × 66,740,715.90
  4. Step 4: Simplify right side
    220,145,643.90x = 22,033,411,875,514,848
  5. Step 5: Solve for x
    x = 22,033,411,875,514,848/220,145,643.90
  6. Step 6: Final answer
    x = 100,085,613.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.