Home / 154,470.15-212,987.19-123,818.74

Finding the Fourth Proportional to 154,470.15, 212,987.19 and 123,818.74

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Solution

The fourth proportional to 154,470.15, 212,987.19 and 123,818.74 is: 170,724.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,470.15 : 212,987.19 = 123,818.74 : x
  2. Step 2: Convert to fraction form
    154,470.15/212,987.19 = 123,818.74/x
  3. Step 3: Cross multiply
    154,470.15x = 212,987.19 × 123,818.74
  4. Step 4: Simplify right side
    154,470.15x = 26,371,804,969.47
  5. Step 5: Solve for x
    x = 26,371,804,969.47/154,470.15
  6. Step 6: Final answer
    x = 170,724.28

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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.