Home / 155,877.36-215,110.71-84,257.34

Finding the Fourth Proportional to 155,877.36, 215,110.71 and 84,257.34

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Solution

The fourth proportional to 155,877.36, 215,110.71 and 84,257.34 is: 116,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,877.36 : 215,110.71 = 84,257.34 : x
  2. Step 2: Convert to fraction form
    155,877.36/215,110.71 = 84,257.34/x
  3. Step 3: Cross multiply
    155,877.36x = 215,110.71 × 84,257.34
  4. Step 4: Simplify right side
    155,877.36x = 18,124,656,230.11
  5. Step 5: Solve for x
    x = 18,124,656,230.11/155,877.36
  6. Step 6: Final answer
    x = 116,275.10

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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.