Home / 151,457.40-209,001.78-83,470.59

Finding the Fourth Proportional to 151,457.40, 209,001.78 and 83,470.59

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Solution

The fourth proportional to 151,457.40, 209,001.78 and 83,470.59 is: 115,184.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,457.40 : 209,001.78 = 83,470.59 : x
  2. Step 2: Convert to fraction form
    151,457.40/209,001.78 = 83,470.59/x
  3. Step 3: Cross multiply
    151,457.40x = 209,001.78 × 83,470.59
  4. Step 4: Simplify right side
    151,457.40x = 17,445,501,887.65
  5. Step 5: Solve for x
    x = 17,445,501,887.65/151,457.40
  6. Step 6: Final answer
    x = 115,184.22

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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.