Home / 126,155.02-189,296.52-69,984.76

Finding the Fourth Proportional to 126,155.02, 189,296.52 and 69,984.76

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Solution

The fourth proportional to 126,155.02, 189,296.52 and 69,984.76 is: 105,012.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,155.02 : 189,296.52 = 69,984.76 : x
  2. Step 2: Convert to fraction form
    126,155.02/189,296.52 = 69,984.76/x
  3. Step 3: Cross multiply
    126,155.02x = 189,296.52 × 69,984.76
  4. Step 4: Simplify right side
    126,155.02x = 13,247,871,521.04
  5. Step 5: Solve for x
    x = 13,247,871,521.04/126,155.02
  6. Step 6: Final answer
    x = 105,012.64

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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.