Home / 130,947.06-180,727.56-77,238.12

Finding the Fourth Proportional to 130,947.06, 180,727.56 and 77,238.12

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Solution

The fourth proportional to 130,947.06, 180,727.56 and 77,238.12 is: 106,600.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,947.06 : 180,727.56 = 77,238.12 : x
  2. Step 2: Convert to fraction form
    130,947.06/180,727.56 = 77,238.12/x
  3. Step 3: Cross multiply
    130,947.06x = 180,727.56 × 77,238.12
  4. Step 4: Simplify right side
    130,947.06x = 13,959,056,966.59
  5. Step 5: Solve for x
    x = 13,959,056,966.59/130,947.06
  6. Step 6: Final answer
    x = 106,600.77

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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.