Home / 121,938,409.62-168,275,244.21-72,388,720.50

Finding the Fourth Proportional to 121,938,409.62, 168,275,244.21 and 72,388,720.50

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Solution

The fourth proportional to 121,938,409.62, 168,275,244.21 and 72,388,720.50 is: 99,896,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,938,409.62 : 168,275,244.21 = 72,388,720.50 : x
  2. Step 2: Convert to fraction form
    121,938,409.62/168,275,244.21 = 72,388,720.50/x
  3. Step 3: Cross multiply
    121,938,409.62x = 168,275,244.21 × 72,388,720.50
  4. Step 4: Simplify right side
    121,938,409.62x = 12,181,229,620,186,934
  5. Step 5: Solve for x
    x = 12,181,229,620,186,934/121,938,409.62
  6. Step 6: Final answer
    x = 99,896,576.13

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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.