Home / 142,614.18-196,810.47-85,312.62

Finding the Fourth Proportional to 142,614.18, 196,810.47 and 85,312.62

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Solution

The fourth proportional to 142,614.18, 196,810.47 and 85,312.62 is: 117,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,614.18 : 196,810.47 = 85,312.62 : x
  2. Step 2: Convert to fraction form
    142,614.18/196,810.47 = 85,312.62/x
  3. Step 3: Cross multiply
    142,614.18x = 196,810.47 × 85,312.62
  4. Step 4: Simplify right side
    142,614.18x = 16,790,416,839.13
  5. Step 5: Solve for x
    x = 16,790,416,839.13/142,614.18
  6. Step 6: Final answer
    x = 117,733.15

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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.