Home / 154,011.86-212,537.10-86,031.70

Finding the Fourth Proportional to 154,011.86, 212,537.10 and 86,031.70

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Solution

The fourth proportional to 154,011.86, 212,537.10 and 86,031.70 is: 118,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,011.86 : 212,537.10 = 86,031.70 : x
  2. Step 2: Convert to fraction form
    154,011.86/212,537.10 = 86,031.70/x
  3. Step 3: Cross multiply
    154,011.86x = 212,537.10 × 86,031.70
  4. Step 4: Simplify right side
    154,011.86x = 18,284,928,026.07
  5. Step 5: Solve for x
    x = 18,284,928,026.07/154,011.86
  6. Step 6: Final answer
    x = 118,724.16

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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.