Home / 159,025.65-219,457.10-86,428.55

Finding the Fourth Proportional to 159,025.65, 219,457.10 and 86,428.55

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Solution

The fourth proportional to 159,025.65, 219,457.10 and 86,428.55 is: 119,272.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,025.65 : 219,457.10 = 86,428.55 : x
  2. Step 2: Convert to fraction form
    159,025.65/219,457.10 = 86,428.55/x
  3. Step 3: Cross multiply
    159,025.65x = 219,457.10 × 86,428.55
  4. Step 4: Simplify right side
    159,025.65x = 18,967,357,410.78
  5. Step 5: Solve for x
    x = 18,967,357,410.78/159,025.65
  6. Step 6: Final answer
    x = 119,272.31

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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.