Home / 139,792,327.80-209,688,491.70-126,187,438.20

Finding the Fourth Proportional to 139,792,327.80, 209,688,491.70 and 126,187,438.20

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Solution

The fourth proportional to 139,792,327.80, 209,688,491.70 and 126,187,438.20 is: 189,281,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,792,327.80 : 209,688,491.70 = 126,187,438.20 : x
  2. Step 2: Convert to fraction form
    139,792,327.80/209,688,491.70 = 126,187,438.20/x
  3. Step 3: Cross multiply
    139,792,327.80x = 209,688,491.70 × 126,187,438.20
  4. Step 4: Simplify right side
    139,792,327.80x = 26,460,053,587,644,964
  5. Step 5: Solve for x
    x = 26,460,053,587,644,964/139,792,327.80
  6. Step 6: Final answer
    x = 189,281,157.30

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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.