Home / 155,880.51-215,116.10-84,260.37

Finding the Fourth Proportional to 155,880.51, 215,116.10 and 84,260.37

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Solution

The fourth proportional to 155,880.51, 215,116.10 and 84,260.37 is: 116,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,880.51 : 215,116.10 = 84,260.37 : x
  2. Step 2: Convert to fraction form
    155,880.51/215,116.10 = 84,260.37/x
  3. Step 3: Cross multiply
    155,880.51x = 215,116.10 × 84,260.37
  4. Step 4: Simplify right side
    155,880.51x = 18,125,761,757.66
  5. Step 5: Solve for x
    x = 18,125,761,757.66/155,880.51
  6. Step 6: Final answer
    x = 116,279.85

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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.