Home / 121,987,417.50-168,343,817.13-66,984,454.98

Finding the Fourth Proportional to 121,987,417.50, 168,343,817.13 and 66,984,454.98

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Solution

The fourth proportional to 121,987,417.50, 168,343,817.13 and 66,984,454.98 is: 92,439,196.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,987,417.50 : 168,343,817.13 = 66,984,454.98 : x
  2. Step 2: Convert to fraction form
    121,987,417.50/168,343,817.13 = 66,984,454.98/x
  3. Step 3: Cross multiply
    121,987,417.50x = 168,343,817.13 × 66,984,454.98
  4. Step 4: Simplify right side
    121,987,417.50x = 11,276,418,839,705,836
  5. Step 5: Solve for x
    x = 11,276,418,839,705,836/121,987,417.50
  6. Step 6: Final answer
    x = 92,439,196.36

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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.