Home / 145,074,138.60-217,469,490.30-129,768,637.80

Finding the Fourth Proportional to 145,074,138.60, 217,469,490.30 and 129,768,637.80

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Solution

The fourth proportional to 145,074,138.60, 217,469,490.30 and 129,768,637.80 is: 194,526,190.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,074,138.60 : 217,469,490.30 = 129,768,637.80 : x
  2. Step 2: Convert to fraction form
    145,074,138.60/217,469,490.30 = 129,768,637.80/x
  3. Step 3: Cross multiply
    145,074,138.60x = 217,469,490.30 × 129,768,637.80
  4. Step 4: Simplify right side
    145,074,138.60x = 28,220,719,519,291,316
  5. Step 5: Solve for x
    x = 28,220,719,519,291,316/145,074,138.60
  6. Step 6: Final answer
    x = 194,526,190.48

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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.