Home / 121,428,336.86-167,572,434.39-66,424,193.90

Finding the Fourth Proportional to 121,428,336.86, 167,572,434.39 and 66,424,193.90

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Solution

The fourth proportional to 121,428,336.86, 167,572,434.39 and 66,424,193.90 is: 91,666,114.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,428,336.86 : 167,572,434.39 = 66,424,193.90 : x
  2. Step 2: Convert to fraction form
    121,428,336.86/167,572,434.39 = 66,424,193.90/x
  3. Step 3: Cross multiply
    121,428,336.86x = 167,572,434.39 × 66,424,193.90
  4. Step 4: Simplify right side
    121,428,336.86x = 11,130,863,874,216,388
  5. Step 5: Solve for x
    x = 11,130,863,874,216,388/121,428,336.86
  6. Step 6: Final answer
    x = 91,666,114.86

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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.