Home / 154,281.18-213,000.93-100,659.18

Finding the Fourth Proportional to 154,281.18, 213,000.93 and 100,659.18

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Solution

The fourth proportional to 154,281.18, 213,000.93 and 100,659.18 is: 138,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,281.18 : 213,000.93 = 100,659.18 : x
  2. Step 2: Convert to fraction form
    154,281.18/213,000.93 = 100,659.18/x
  3. Step 3: Cross multiply
    154,281.18x = 213,000.93 × 100,659.18
  4. Step 4: Simplify right side
    154,281.18x = 21,440,498,953.04
  5. Step 5: Solve for x
    x = 21,440,498,953.04/154,281.18
  6. Step 6: Final answer
    x = 138,970.28

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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.