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Finding the Fourth Proportional to 104,254.76, 143,871 and 56,507.60

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Solution

The fourth proportional to 104,254.76, 143,871 and 56,507.60 is: 77,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,254.76 : 143,871 = 56,507.60 : x
  2. Step 2: Convert to fraction form
    104,254.76/143,871 = 56,507.60/x
  3. Step 3: Cross multiply
    104,254.76x = 143,871 × 56,507.60
  4. Step 4: Simplify right side
    104,254.76x = 8,129,804,919.60
  5. Step 5: Solve for x
    x = 8,129,804,919.60/104,254.76
  6. Step 6: Final answer
    x = 77,980.18

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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.