Home / 121,938,411.12-168,275,246.28-72,388,722

Finding the Fourth Proportional to 121,938,411.12, 168,275,246.28 and 72,388,722

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Solution

The fourth proportional to 121,938,411.12, 168,275,246.28 and 72,388,722 is: 99,896,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,938,411.12 : 168,275,246.28 = 72,388,722 : x
  2. Step 2: Convert to fraction form
    121,938,411.12/168,275,246.28 = 72,388,722/x
  3. Step 3: Cross multiply
    121,938,411.12x = 168,275,246.28 × 72,388,722
  4. Step 4: Simplify right side
    121,938,411.12x = 12,181,230,022,444,454
  5. Step 5: Solve for x
    x = 12,181,230,022,444,454/121,938,411.12
  6. Step 6: Final answer
    x = 99,896,578.20

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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.