Home / 157,904.40-217,905.44-86,282.77

Finding the Fourth Proportional to 157,904.40, 217,905.44 and 86,282.77

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Solution

The fourth proportional to 157,904.40, 217,905.44 and 86,282.77 is: 119,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,904.40 : 217,905.44 = 86,282.77 : x
  2. Step 2: Convert to fraction form
    157,904.40/217,905.44 = 86,282.77/x
  3. Step 3: Cross multiply
    157,904.40x = 217,905.44 × 86,282.77
  4. Step 4: Simplify right side
    157,904.40x = 18,801,484,529.86
  5. Step 5: Solve for x
    x = 18,801,484,529.86/157,904.40
  6. Step 6: Final answer
    x = 119,068.79

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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.