Home / 151,688.74-209,330.30-83,705.70

Finding the Fourth Proportional to 151,688.74, 209,330.30 and 83,705.70

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Solution

The fourth proportional to 151,688.74, 209,330.30 and 83,705.70 is: 115,513.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,688.74 : 209,330.30 = 83,705.70 : x
  2. Step 2: Convert to fraction form
    151,688.74/209,330.30 = 83,705.70/x
  3. Step 3: Cross multiply
    151,688.74x = 209,330.30 × 83,705.70
  4. Step 4: Simplify right side
    151,688.74x = 17,522,139,292.71
  5. Step 5: Solve for x
    x = 17,522,139,292.71/151,688.74
  6. Step 6: Final answer
    x = 115,513.78

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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.