Home / 121,693,674.28-167,995,179.30-81,528,829.42

Finding the Fourth Proportional to 121,693,674.28, 167,995,179.30 and 81,528,829.42

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Solution

The fourth proportional to 121,693,674.28, 167,995,179.30 and 81,528,829.42 is: 112,548,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,693,674.28 : 167,995,179.30 = 81,528,829.42 : x
  2. Step 2: Convert to fraction form
    121,693,674.28/167,995,179.30 = 81,528,829.42/x
  3. Step 3: Cross multiply
    121,693,674.28x = 167,995,179.30 × 81,528,829.42
  4. Step 4: Simplify right side
    121,693,674.28x = 13,696,450,316,532,016
  5. Step 5: Solve for x
    x = 13,696,450,316,532,016/121,693,674.28
  6. Step 6: Final answer
    x = 112,548,580.67

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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.