Home / 121,513,949.28-167,689,452.96-66,513,290.40

Finding the Fourth Proportional to 121,513,949.28, 167,689,452.96 and 66,513,290.40

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Solution

The fourth proportional to 121,513,949.28, 167,689,452.96 and 66,513,290.40 is: 91,788,451.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,513,949.28 : 167,689,452.96 = 66,513,290.40 : x
  2. Step 2: Convert to fraction form
    121,513,949.28/167,689,452.96 = 66,513,290.40/x
  3. Step 3: Cross multiply
    121,513,949.28x = 167,689,452.96 × 66,513,290.40
  4. Step 4: Simplify right side
    121,513,949.28x = 11,153,577,281,745,620
  5. Step 5: Solve for x
    x = 11,153,577,281,745,620/121,513,949.28
  6. Step 6: Final answer
    x = 91,788,451.84

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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.