Home / 128,880,864.18-177,406,395.21-112,332,233.70

Finding the Fourth Proportional to 128,880,864.18, 177,406,395.21 and 112,332,233.70

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Solution

The fourth proportional to 128,880,864.18, 177,406,395.21 and 112,332,233.70 is: 154,626,963.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880,864.18 : 177,406,395.21 = 112,332,233.70 : x
  2. Step 2: Convert to fraction form
    128,880,864.18/177,406,395.21 = 112,332,233.70/x
  3. Step 3: Cross multiply
    128,880,864.18x = 177,406,395.21 × 112,332,233.70
  4. Step 4: Simplify right side
    128,880,864.18x = 19,928,456,646,604,284
  5. Step 5: Solve for x
    x = 19,928,456,646,604,284/128,880,864.18
  6. Step 6: Final answer
    x = 154,626,963.23

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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.