Home / 134,779.48-186,004.80-78,190.88

Finding the Fourth Proportional to 134,779.48, 186,004.80 and 78,190.88

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Solution

The fourth proportional to 134,779.48, 186,004.80 and 78,190.88 is: 107,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,779.48 : 186,004.80 = 78,190.88 : x
  2. Step 2: Convert to fraction form
    134,779.48/186,004.80 = 78,190.88/x
  3. Step 3: Cross multiply
    134,779.48x = 186,004.80 × 78,190.88
  4. Step 4: Simplify right side
    134,779.48x = 14,543,878,996.22
  5. Step 5: Solve for x
    x = 14,543,878,996.22/134,779.48
  6. Step 6: Final answer
    x = 107,908.70

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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.