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Finding the Fourth Proportional to 104,620.70, 144,374.86 and 56,875.25

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Solution

The fourth proportional to 104,620.70, 144,374.86 and 56,875.25 is: 78,486.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,620.70 : 144,374.86 = 56,875.25 : x
  2. Step 2: Convert to fraction form
    104,620.70/144,374.86 = 56,875.25/x
  3. Step 3: Cross multiply
    104,620.70x = 144,374.86 × 56,875.25
  4. Step 4: Simplify right side
    104,620.70x = 8,211,356,256.22
  5. Step 5: Solve for x
    x = 8,211,356,256.22/104,620.70
  6. Step 6: Final answer
    x = 78,486.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.