Home / 145,539,012.80-218,308,519.20-142,669,231.40

Finding the Fourth Proportional to 145,539,012.80, 218,308,519.20 and 142,669,231.40

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Solution

The fourth proportional to 145,539,012.80, 218,308,519.20 and 142,669,231.40 is: 214,003,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,539,012.80 : 218,308,519.20 = 142,669,231.40 : x
  2. Step 2: Convert to fraction form
    145,539,012.80/218,308,519.20 = 142,669,231.40/x
  3. Step 3: Cross multiply
    145,539,012.80x = 218,308,519.20 × 142,669,231.40
  4. Step 4: Simplify right side
    145,539,012.80x = 31,145,908,642,336,144
  5. Step 5: Solve for x
    x = 31,145,908,642,336,144/145,539,012.80
  6. Step 6: Final answer
    x = 214,003,847.10

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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.