Home / 138,724.56-191,406.60-84,275.64

Finding the Fourth Proportional to 138,724.56, 191,406.60 and 84,275.64

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Solution

The fourth proportional to 138,724.56, 191,406.60 and 84,275.64 is: 116,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724.56 : 191,406.60 = 84,275.64 : x
  2. Step 2: Convert to fraction form
    138,724.56/191,406.60 = 84,275.64/x
  3. Step 3: Cross multiply
    138,724.56x = 191,406.60 × 84,275.64
  4. Step 4: Simplify right side
    138,724.56x = 16,130,913,715.22
  5. Step 5: Solve for x
    x = 16,130,913,715.22/138,724.56
  6. Step 6: Final answer
    x = 116,280.16

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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.