Home / 139,409,136.80-209,113,705.20-48,502,512.80

Finding the Fourth Proportional to 139,409,136.80, 209,113,705.20 and 48,502,512.80

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Solution

The fourth proportional to 139,409,136.80, 209,113,705.20 and 48,502,512.80 is: 72,753,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,409,136.80 : 209,113,705.20 = 48,502,512.80 : x
  2. Step 2: Convert to fraction form
    139,409,136.80/209,113,705.20 = 48,502,512.80/x
  3. Step 3: Cross multiply
    139,409,136.80x = 209,113,705.20 × 48,502,512.80
  4. Step 4: Simplify right side
    139,409,136.80x = 10,142,540,163,118,426
  5. Step 5: Solve for x
    x = 10,142,540,163,118,426/139,409,136.80
  6. Step 6: Final answer
    x = 72,753,769.20

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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.