Home / 154,711.13-213,501.35-87,643.13

Finding the Fourth Proportional to 154,711.13, 213,501.35 and 87,643.13

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Solution

The fourth proportional to 154,711.13, 213,501.35 and 87,643.13 is: 120,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,711.13 : 213,501.35 = 87,643.13 : x
  2. Step 2: Convert to fraction form
    154,711.13/213,501.35 = 87,643.13/x
  3. Step 3: Cross multiply
    154,711.13x = 213,501.35 × 87,643.13
  4. Step 4: Simplify right side
    154,711.13x = 18,711,925,724.83
  5. Step 5: Solve for x
    x = 18,711,925,724.83/154,711.13
  6. Step 6: Final answer
    x = 120,947.51

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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.