Home / 112,763,790.40-169,145,685.60-78,751,566.40

Finding the Fourth Proportional to 112,763,790.40, 169,145,685.60 and 78,751,566.40

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Solution

The fourth proportional to 112,763,790.40, 169,145,685.60 and 78,751,566.40 is: 118,127,349.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,763,790.40 : 169,145,685.60 = 78,751,566.40 : x
  2. Step 2: Convert to fraction form
    112,763,790.40/169,145,685.60 = 78,751,566.40/x
  3. Step 3: Cross multiply
    112,763,790.40x = 169,145,685.60 × 78,751,566.40
  4. Step 4: Simplify right side
    112,763,790.40x = 13,320,487,690,801,924
  5. Step 5: Solve for x
    x = 13,320,487,690,801,924/112,763,790.40
  6. Step 6: Final answer
    x = 118,127,349.60

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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.