Home / 121,084,429.20-181,626,643.80-66,664,870.80

Finding the Fourth Proportional to 121,084,429.20, 181,626,643.80 and 66,664,870.80

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Solution

The fourth proportional to 121,084,429.20, 181,626,643.80 and 66,664,870.80 is: 99,997,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,084,429.20 : 181,626,643.80 = 66,664,870.80 : x
  2. Step 2: Convert to fraction form
    121,084,429.20/181,626,643.80 = 66,664,870.80/x
  3. Step 3: Cross multiply
    121,084,429.20x = 181,626,643.80 × 66,664,870.80
  4. Step 4: Simplify right side
    121,084,429.20x = 12,108,116,742,764,622
  5. Step 5: Solve for x
    x = 12,108,116,742,764,622/121,084,429.20
  6. Step 6: Final answer
    x = 99,997,306.20

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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.