Home / 151,649.40-209,278.85-83,670.15

Finding the Fourth Proportional to 151,649.40, 209,278.85 and 83,670.15

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Solution

The fourth proportional to 151,649.40, 209,278.85 and 83,670.15 is: 115,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,649.40 : 209,278.85 = 83,670.15 : x
  2. Step 2: Convert to fraction form
    151,649.40/209,278.85 = 83,670.15/x
  3. Step 3: Cross multiply
    151,649.40x = 209,278.85 × 83,670.15
  4. Step 4: Simplify right side
    151,649.40x = 17,510,392,352.98
  5. Step 5: Solve for x
    x = 17,510,392,352.98/151,649.40
  6. Step 6: Final answer
    x = 115,466.28

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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.