Home / 151,478.51-209,030.82-83,491.74

Finding the Fourth Proportional to 151,478.51, 209,030.82 and 83,491.74

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Solution

The fourth proportional to 151,478.51, 209,030.82 and 83,491.74 is: 115,213.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,478.51 : 209,030.82 = 83,491.74 : x
  2. Step 2: Convert to fraction form
    151,478.51/209,030.82 = 83,491.74/x
  3. Step 3: Cross multiply
    151,478.51x = 209,030.82 × 83,491.74
  4. Step 4: Simplify right side
    151,478.51x = 17,452,346,875.43
  5. Step 5: Solve for x
    x = 17,452,346,875.43/151,478.51
  6. Step 6: Final answer
    x = 115,213.36

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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.