Home / 133,309.59-183,941.85-78,870.30

Finding the Fourth Proportional to 133,309.59, 183,941.85 and 78,870.30

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Solution

The fourth proportional to 133,309.59, 183,941.85 and 78,870.30 is: 108,826.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,309.59 : 183,941.85 = 78,870.30 : x
  2. Step 2: Convert to fraction form
    133,309.59/183,941.85 = 78,870.30/x
  3. Step 3: Cross multiply
    133,309.59x = 183,941.85 × 78,870.30
  4. Step 4: Simplify right side
    133,309.59x = 14,507,548,892.06
  5. Step 5: Solve for x
    x = 14,507,548,892.06/133,309.59
  6. Step 6: Final answer
    x = 108,826.00

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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.