Home / 99,640,831.47-137,382,184.88-81,937,868.37

Finding the Fourth Proportional to 99,640,831.47, 137,382,184.88 and 81,937,868.37

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Solution

The fourth proportional to 99,640,831.47, 137,382,184.88 and 81,937,868.37 is: 112,973,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,640,831.47 : 137,382,184.88 = 81,937,868.37 : x
  2. Step 2: Convert to fraction form
    99,640,831.47/137,382,184.88 = 81,937,868.37/x
  3. Step 3: Cross multiply
    99,640,831.47x = 137,382,184.88 × 81,937,868.37
  4. Step 4: Simplify right side
    99,640,831.47x = 11,256,803,380,393,532
  5. Step 5: Solve for x
    x = 11,256,803,380,393,532/99,640,831.47
  6. Step 6: Final answer
    x = 112,973,800.15

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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.