Home / 99,963,035.19-137,947,968.68-55,909,928.88

Finding the Fourth Proportional to 99,963,035.19, 137,947,968.68 and 55,909,928.88

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Solution

The fourth proportional to 99,963,035.19, 137,947,968.68 and 55,909,928.88 is: 77,155,131.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,963,035.19 : 137,947,968.68 = 55,909,928.88 : x
  2. Step 2: Convert to fraction form
    99,963,035.19/137,947,968.68 = 55,909,928.88/x
  3. Step 3: Cross multiply
    99,963,035.19x = 137,947,968.68 × 55,909,928.88
  4. Step 4: Simplify right side
    99,963,035.19x = 7,712,661,117,759,719
  5. Step 5: Solve for x
    x = 7,712,661,117,759,719/99,963,035.19
  6. Step 6: Final answer
    x = 77,155,131.43

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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.