Home / 145,633,651.80-218,303,511.30-72,738,317.40

Finding the Fourth Proportional to 145,633,651.80, 218,303,511.30 and 72,738,317.40

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Solution

The fourth proportional to 145,633,651.80, 218,303,511.30 and 72,738,317.40 is: 109,034,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633,651.80 : 218,303,511.30 = 72,738,317.40 : x
  2. Step 2: Convert to fraction form
    145,633,651.80/218,303,511.30 = 72,738,317.40/x
  3. Step 3: Cross multiply
    145,633,651.80x = 218,303,511.30 × 72,738,317.40
  4. Step 4: Simplify right side
    145,633,651.80x = 15,879,030,094,473,888
  5. Step 5: Solve for x
    x = 15,879,030,094,473,888/145,633,651.80
  6. Step 6: Final answer
    x = 109,034,072.13

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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.