Home / 140,082.88-193,312.56-76,419.32

Finding the Fourth Proportional to 140,082.88, 193,312.56 and 76,419.32

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Solution

The fourth proportional to 140,082.88, 193,312.56 and 76,419.32 is: 105,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,082.88 : 193,312.56 = 76,419.32 : x
  2. Step 2: Convert to fraction form
    140,082.88/193,312.56 = 76,419.32/x
  3. Step 3: Cross multiply
    140,082.88x = 193,312.56 × 76,419.32
  4. Step 4: Simplify right side
    140,082.88x = 14,772,814,382.66
  5. Step 5: Solve for x
    x = 14,772,814,382.66/140,082.88
  6. Step 6: Final answer
    x = 105,457.67

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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.