Home / 84,247,513.20-126,371,269.80-70,642,623.60

Finding the Fourth Proportional to 84,247,513.20, 126,371,269.80 and 70,642,623.60

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Solution

The fourth proportional to 84,247,513.20, 126,371,269.80 and 70,642,623.60 is: 105,963,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,247,513.20 : 126,371,269.80 = 70,642,623.60 : x
  2. Step 2: Convert to fraction form
    84,247,513.20/126,371,269.80 = 70,642,623.60/x
  3. Step 3: Cross multiply
    84,247,513.20x = 126,371,269.80 × 70,642,623.60
  4. Step 4: Simplify right side
    84,247,513.20x = 8,927,198,046,335,446
  5. Step 5: Solve for x
    x = 8,927,198,046,335,446/84,247,513.20
  6. Step 6: Final answer
    x = 105,963,935.40

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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.