Home / 103,011.42-154,255.77-86,327.58

Finding the Fourth Proportional to 103,011.42, 154,255.77 and 86,327.58

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Solution

The fourth proportional to 103,011.42, 154,255.77 and 86,327.58 is: 129,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,011.42 : 154,255.77 = 86,327.58 : x
  2. Step 2: Convert to fraction form
    103,011.42/154,255.77 = 86,327.58/x
  3. Step 3: Cross multiply
    103,011.42x = 154,255.77 × 86,327.58
  4. Step 4: Simplify right side
    103,011.42x = 13,316,527,325.14
  5. Step 5: Solve for x
    x = 13,316,527,325.14/103,011.42
  6. Step 6: Final answer
    x = 129,272.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.