Home / 102,278.16-141,140.04-56,958

Finding the Fourth Proportional to 102,278.16, 141,140.04 and 56,958

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Solution

The fourth proportional to 102,278.16, 141,140.04 and 56,958 is: 78,599.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,278.16 : 141,140.04 = 56,958 : x
  2. Step 2: Convert to fraction form
    102,278.16/141,140.04 = 56,958/x
  3. Step 3: Cross multiply
    102,278.16x = 141,140.04 × 56,958
  4. Step 4: Simplify right side
    102,278.16x = 8,039,054,398.32
  5. Step 5: Solve for x
    x = 8,039,054,398.32/102,278.16
  6. Step 6: Final answer
    x = 78,599.91

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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.