Home / 145,630,672.80-218,446,009.20-129,758,301.60

Finding the Fourth Proportional to 145,630,672.80, 218,446,009.20 and 129,758,301.60

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Solution

The fourth proportional to 145,630,672.80, 218,446,009.20 and 129,758,301.60 is: 194,637,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,630,672.80 : 218,446,009.20 = 129,758,301.60 : x
  2. Step 2: Convert to fraction form
    145,630,672.80/218,446,009.20 = 129,758,301.60/x
  3. Step 3: Cross multiply
    145,630,672.80x = 218,446,009.20 × 129,758,301.60
  4. Step 4: Simplify right side
    145,630,672.80x = 28,345,183,145,089,972
  5. Step 5: Solve for x
    x = 28,345,183,145,089,972/145,630,672.80
  6. Step 6: Final answer
    x = 194,637,452.40

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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.