Home / 103,980.28-156,039.60-56,607.32

Finding the Fourth Proportional to 103,980.28, 156,039.60 and 56,607.32

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Solution

The fourth proportional to 103,980.28, 156,039.60 and 56,607.32 is: 84,948.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,980.28 : 156,039.60 = 56,607.32 : x
  2. Step 2: Convert to fraction form
    103,980.28/156,039.60 = 56,607.32/x
  3. Step 3: Cross multiply
    103,980.28x = 156,039.60 × 56,607.32
  4. Step 4: Simplify right side
    103,980.28x = 8,832,983,569.87
  5. Step 5: Solve for x
    x = 8,832,983,569.87/103,980.28
  6. Step 6: Final answer
    x = 84,948.64

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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.