Home / 103,741.60-155,482.80-76,007.20

Finding the Fourth Proportional to 103,741.60, 155,482.80 and 76,007.20

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Solution

The fourth proportional to 103,741.60, 155,482.80 and 76,007.20 is: 113,915.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,741.60 : 155,482.80 = 76,007.20 : x
  2. Step 2: Convert to fraction form
    103,741.60/155,482.80 = 76,007.20/x
  3. Step 3: Cross multiply
    103,741.60x = 155,482.80 × 76,007.20
  4. Step 4: Simplify right side
    103,741.60x = 11,817,812,276.16
  5. Step 5: Solve for x
    x = 11,817,812,276.16/103,741.60
  6. Step 6: Final answer
    x = 113,915.85

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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.