Home / 151,386.15-208,911.75-90,955.23

Finding the Fourth Proportional to 151,386.15, 208,911.75 and 90,955.23

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Solution

The fourth proportional to 151,386.15, 208,911.75 and 90,955.23 is: 125,517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,386.15 : 208,911.75 = 90,955.23 : x
  2. Step 2: Convert to fraction form
    151,386.15/208,911.75 = 90,955.23/x
  3. Step 3: Cross multiply
    151,386.15x = 208,911.75 × 90,955.23
  4. Step 4: Simplify right side
    151,386.15x = 19,001,616,270.95
  5. Step 5: Solve for x
    x = 19,001,616,270.95/151,386.15
  6. Step 6: Final answer
    x = 125,517.53

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1.5x scale

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.