Home / 112,128,038.40-168,192,057.60-40,315,123.20

Finding the Fourth Proportional to 112,128,038.40, 168,192,057.60 and 40,315,123.20

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Solution

The fourth proportional to 112,128,038.40, 168,192,057.60 and 40,315,123.20 is: 60,472,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,128,038.40 : 168,192,057.60 = 40,315,123.20 : x
  2. Step 2: Convert to fraction form
    112,128,038.40/168,192,057.60 = 40,315,123.20/x
  3. Step 3: Cross multiply
    112,128,038.40x = 168,192,057.60 × 40,315,123.20
  4. Step 4: Simplify right side
    112,128,038.40x = 6,780,683,523,405,497
  5. Step 5: Solve for x
    x = 6,780,683,523,405,497/112,128,038.40
  6. Step 6: Final answer
    x = 60,472,684.80

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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.