Home / 163,735,216.40-245,437,487.40-81,727,965.20

Finding the Fourth Proportional to 163,735,216.40, 245,437,487.40 and 81,727,965.20

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Solution

The fourth proportional to 163,735,216.40, 245,437,487.40 and 81,727,965.20 is: 122,509,420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,735,216.40 : 245,437,487.40 = 81,727,965.20 : x
  2. Step 2: Convert to fraction form
    163,735,216.40/245,437,487.40 = 81,727,965.20/x
  3. Step 3: Cross multiply
    163,735,216.40x = 245,437,487.40 × 81,727,965.20
  4. Step 4: Simplify right side
    163,735,216.40x = 20,059,106,429,002,640
  5. Step 5: Solve for x
    x = 20,059,106,429,002,640/163,735,216.40
  6. Step 6: Final answer
    x = 122,509,420.21

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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.