Home / 230,856.16-318,580.24-128,875.72

Finding the Fourth Proportional to 230,856.16, 318,580.24 and 128,875.72

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Solution

The fourth proportional to 230,856.16, 318,580.24 and 128,875.72 is: 177,847.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,856.16 : 318,580.24 = 128,875.72 : x
  2. Step 2: Convert to fraction form
    230,856.16/318,580.24 = 128,875.72/x
  3. Step 3: Cross multiply
    230,856.16x = 318,580.24 × 128,875.72
  4. Step 4: Simplify right side
    230,856.16x = 41,057,257,807.77
  5. Step 5: Solve for x
    x = 41,057,257,807.77/230,856.16
  6. Step 6: Final answer
    x = 177,847.79

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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.