Home / 151,386.48-208,913.40-87,761.16

Finding the Fourth Proportional to 151,386.48, 208,913.40 and 87,761.16

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Solution

The fourth proportional to 151,386.48, 208,913.40 and 87,761.16 is: 121,110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,386.48 : 208,913.40 = 87,761.16 : x
  2. Step 2: Convert to fraction form
    151,386.48/208,913.40 = 87,761.16/x
  3. Step 3: Cross multiply
    151,386.48x = 208,913.40 × 87,761.16
  4. Step 4: Simplify right side
    151,386.48x = 18,334,482,323.54
  5. Step 5: Solve for x
    x = 18,334,482,323.54/151,386.48
  6. Step 6: Final answer
    x = 121,110.43

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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.