Home / 131,258.12-181,073.16-85,916.12

Finding the Fourth Proportional to 131,258.12, 181,073.16 and 85,916.12

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Solution

The fourth proportional to 131,258.12, 181,073.16 and 85,916.12 is: 118,522.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,258.12 : 181,073.16 = 85,916.12 : x
  2. Step 2: Convert to fraction form
    131,258.12/181,073.16 = 85,916.12/x
  3. Step 3: Cross multiply
    131,258.12x = 181,073.16 × 85,916.12
  4. Step 4: Simplify right side
    131,258.12x = 15,557,103,343.34
  5. Step 5: Solve for x
    x = 15,557,103,343.34/131,258.12
  6. Step 6: Final answer
    x = 118,522.98

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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.