Home / 154,278.28-212,901.16-87,210.28

Finding the Fourth Proportional to 154,278.28, 212,901.16 and 87,210.28

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Solution

The fourth proportional to 154,278.28, 212,901.16 and 87,210.28 is: 120,348.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,278.28 : 212,901.16 = 87,210.28 : x
  2. Step 2: Convert to fraction form
    154,278.28/212,901.16 = 87,210.28/x
  3. Step 3: Cross multiply
    154,278.28x = 212,901.16 × 87,210.28
  4. Step 4: Simplify right side
    154,278.28x = 18,567,169,775.92
  5. Step 5: Solve for x
    x = 18,567,169,775.92/154,278.28
  6. Step 6: Final answer
    x = 120,348.57

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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.