Home / 127,090.64-175,389.74-76,779.92

Finding the Fourth Proportional to 127,090.64, 175,389.74 and 76,779.92

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Solution

The fourth proportional to 127,090.64, 175,389.74 and 76,779.92 is: 105,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,090.64 : 175,389.74 = 76,779.92 : x
  2. Step 2: Convert to fraction form
    127,090.64/175,389.74 = 76,779.92/x
  3. Step 3: Cross multiply
    127,090.64x = 175,389.74 × 76,779.92
  4. Step 4: Simplify right side
    127,090.64x = 13,466,410,206.02
  5. Step 5: Solve for x
    x = 13,466,410,206.02/127,090.64
  6. Step 6: Final answer
    x = 105,959.10

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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.