Home / 138,156,366.04-190,672,505.29-78,632,135.38

Finding the Fourth Proportional to 138,156,366.04, 190,672,505.29 and 78,632,135.38

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Solution

The fourth proportional to 138,156,366.04, 190,672,505.29 and 78,632,135.38 is: 108,521,863.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,156,366.04 : 190,672,505.29 = 78,632,135.38 : x
  2. Step 2: Convert to fraction form
    138,156,366.04/190,672,505.29 = 78,632,135.38/x
  3. Step 3: Cross multiply
    138,156,366.04x = 190,672,505.29 × 78,632,135.38
  4. Step 4: Simplify right side
    138,156,366.04x = 14,992,986,249,207,044
  5. Step 5: Solve for x
    x = 14,992,986,249,207,044/138,156,366.04
  6. Step 6: Final answer
    x = 108,521,863.15

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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.