Home / 118,305,812.80-177,160,120.80-77,696,430.40

Finding the Fourth Proportional to 118,305,812.80, 177,160,120.80 and 77,696,430.40

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Solution

The fourth proportional to 118,305,812.80, 177,160,120.80 and 77,696,430.40 is: 116,348,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,305,812.80 : 177,160,120.80 = 77,696,430.40 : x
  2. Step 2: Convert to fraction form
    118,305,812.80/177,160,120.80 = 77,696,430.40/x
  3. Step 3: Cross multiply
    118,305,812.80x = 177,160,120.80 × 77,696,430.40
  4. Step 4: Simplify right side
    118,305,812.80x = 13,764,708,995,392,794
  5. Step 5: Solve for x
    x = 13,764,708,995,392,794/118,305,812.80
  6. Step 6: Final answer
    x = 116,348,543.40

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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.