Home / 157,436.19-217,258.71-85,815.59

Finding the Fourth Proportional to 157,436.19, 217,258.71 and 85,815.59

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Solution

The fourth proportional to 157,436.19, 217,258.71 and 85,815.59 is: 118,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,436.19 : 217,258.71 = 85,815.59 : x
  2. Step 2: Convert to fraction form
    157,436.19/217,258.71 = 85,815.59/x
  3. Step 3: Cross multiply
    157,436.19x = 217,258.71 × 85,815.59
  4. Step 4: Simplify right side
    157,436.19x = 18,644,184,381.29
  5. Step 5: Solve for x
    x = 18,644,184,381.29/157,436.19
  6. Step 6: Final answer
    x = 118,423.75

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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.