Home / 102,403.85-141,322.11-57,082.16

Finding the Fourth Proportional to 102,403.85, 141,322.11 and 57,082.16

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Solution

The fourth proportional to 102,403.85, 141,322.11 and 57,082.16 is: 78,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,403.85 : 141,322.11 = 57,082.16 : x
  2. Step 2: Convert to fraction form
    102,403.85/141,322.11 = 57,082.16/x
  3. Step 3: Cross multiply
    102,403.85x = 141,322.11 × 57,082.16
  4. Step 4: Simplify right side
    102,403.85x = 8,066,971,647.86
  5. Step 5: Solve for x
    x = 8,066,971,647.86/102,403.85
  6. Step 6: Final answer
    x = 78,776.06

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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.