Home / 154,159.20-212,740.55-86,179.04

Finding the Fourth Proportional to 154,159.20, 212,740.55 and 86,179.04

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Solution

The fourth proportional to 154,159.20, 212,740.55 and 86,179.04 is: 118,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,159.20 : 212,740.55 = 86,179.04 : x
  2. Step 2: Convert to fraction form
    154,159.20/212,740.55 = 86,179.04/x
  3. Step 3: Cross multiply
    154,159.20x = 212,740.55 × 86,179.04
  4. Step 4: Simplify right side
    154,159.20x = 18,333,776,583.52
  5. Step 5: Solve for x
    x = 18,333,776,583.52/154,159.20
  6. Step 6: Final answer
    x = 118,927.55

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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.