Home / 130,797,972.69-180,509,355.45-72,060,625.65

Finding the Fourth Proportional to 130,797,972.69, 180,509,355.45 and 72,060,625.65

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Solution

The fourth proportional to 130,797,972.69, 180,509,355.45 and 72,060,625.65 is: 99,448,155.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,797,972.69 : 180,509,355.45 = 72,060,625.65 : x
  2. Step 2: Convert to fraction form
    130,797,972.69/180,509,355.45 = 72,060,625.65/x
  3. Step 3: Cross multiply
    130,797,972.69x = 180,509,355.45 × 72,060,625.65
  4. Step 4: Simplify right side
    130,797,972.69x = 13,007,617,089,405,238
  5. Step 5: Solve for x
    x = 13,007,617,089,405,238/130,797,972.69
  6. Step 6: Final answer
    x = 99,448,155.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.