Home / 103,440.42-155,157.53-28,565.13

Finding the Fourth Proportional to 103,440.42, 155,157.53 and 28,565.13

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Solution

The fourth proportional to 103,440.42, 155,157.53 and 28,565.13 is: 42,846.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,440.42 : 155,157.53 = 28,565.13 : x
  2. Step 2: Convert to fraction form
    103,440.42/155,157.53 = 28,565.13/x
  3. Step 3: Cross multiply
    103,440.42x = 155,157.53 × 28,565.13
  4. Step 4: Simplify right side
    103,440.42x = 4,432,094,872.10
  5. Step 5: Solve for x
    x = 4,432,094,872.10/103,440.42
  6. Step 6: Final answer
    x = 42,846.84

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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.