Home / 112,129,376.40-168,194,064.60-77,691,999.60

Finding the Fourth Proportional to 112,129,376.40, 168,194,064.60 and 77,691,999.60

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Solution

The fourth proportional to 112,129,376.40, 168,194,064.60 and 77,691,999.60 is: 116,537,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129,376.40 : 168,194,064.60 = 77,691,999.60 : x
  2. Step 2: Convert to fraction form
    112,129,376.40/168,194,064.60 = 77,691,999.60/x
  3. Step 3: Cross multiply
    112,129,376.40x = 168,194,064.60 × 77,691,999.60
  4. Step 4: Simplify right side
    112,129,376.40x = 13,067,333,199,625,572
  5. Step 5: Solve for x
    x = 13,067,333,199,625,572/112,129,376.40
  6. Step 6: Final answer
    x = 116,537,999.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.