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Finding the Fourth Proportional to 84,249,969.30, 126,374,953.95 and 84,249,969.30

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Solution

The fourth proportional to 84,249,969.30, 126,374,953.95 and 84,249,969.30 is: 126,374,953.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,249,969.30 : 126,374,953.95 = 84,249,969.30 : x
  2. Step 2: Convert to fraction form
    84,249,969.30/126,374,953.95 = 84,249,969.30/x
  3. Step 3: Cross multiply
    84,249,969.30x = 126,374,953.95 × 84,249,969.30
  4. Step 4: Simplify right side
    84,249,969.30x = 10,647,085,990,576,414
  5. Step 5: Solve for x
    x = 10,647,085,990,576,414/84,249,969.30
  6. Step 6: Final answer
    x = 126,374,953.95

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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.