Home / 205,427.30-308,140.95-72,457.70

Finding the Fourth Proportional to 205,427.30, 308,140.95 and 72,457.70

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Solution

The fourth proportional to 205,427.30, 308,140.95 and 72,457.70 is: 108,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,427.30 : 308,140.95 = 72,457.70 : x
  2. Step 2: Convert to fraction form
    205,427.30/308,140.95 = 72,457.70/x
  3. Step 3: Cross multiply
    205,427.30x = 308,140.95 × 72,457.70
  4. Step 4: Simplify right side
    205,427.30x = 22,327,184,512.82
  5. Step 5: Solve for x
    x = 22,327,184,512.82/205,427.30
  6. Step 6: Final answer
    x = 108,686.55

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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.