Home / 170,721.20-256,081.80-153,808.40

Finding the Fourth Proportional to 170,721.20, 256,081.80 and 153,808.40

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Solution

The fourth proportional to 170,721.20, 256,081.80 and 153,808.40 is: 230,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,721.20 : 256,081.80 = 153,808.40 : x
  2. Step 2: Convert to fraction form
    170,721.20/256,081.80 = 153,808.40/x
  3. Step 3: Cross multiply
    170,721.20x = 256,081.80 × 153,808.40
  4. Step 4: Simplify right side
    170,721.20x = 39,387,531,927.12
  5. Step 5: Solve for x
    x = 39,387,531,927.12/170,721.20
  6. Step 6: Final answer
    x = 230,712.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.