Home / 119,688.39-165,158.06-71,280.72

Finding the Fourth Proportional to 119,688.39, 165,158.06 and 71,280.72

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Solution

The fourth proportional to 119,688.39, 165,158.06 and 71,280.72 is: 98,360.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,688.39 : 165,158.06 = 71,280.72 : x
  2. Step 2: Convert to fraction form
    119,688.39/165,158.06 = 71,280.72/x
  3. Step 3: Cross multiply
    119,688.39x = 165,158.06 × 71,280.72
  4. Step 4: Simplify right side
    119,688.39x = 11,772,585,074.20
  5. Step 5: Solve for x
    x = 11,772,585,074.20/119,688.39
  6. Step 6: Final answer
    x = 98,360.29

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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.