Home / 154,312.35-212,970.66-86,333.10

Finding the Fourth Proportional to 154,312.35, 212,970.66 and 86,333.10

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Solution

The fourth proportional to 154,312.35, 212,970.66 and 86,333.10 is: 119,150.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,312.35 : 212,970.66 = 86,333.10 : x
  2. Step 2: Convert to fraction form
    154,312.35/212,970.66 = 86,333.10/x
  3. Step 3: Cross multiply
    154,312.35x = 212,970.66 × 86,333.10
  4. Step 4: Simplify right side
    154,312.35x = 18,386,417,286.85
  5. Step 5: Solve for x
    x = 18,386,417,286.85/154,312.35
  6. Step 6: Final answer
    x = 119,150.65

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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.