Home / 156,749.82-216,312.70-85,130.30

Finding the Fourth Proportional to 156,749.82, 216,312.70 and 85,130.30

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Solution

The fourth proportional to 156,749.82, 216,312.70 and 85,130.30 is: 117,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.82 : 216,312.70 = 85,130.30 : x
  2. Step 2: Convert to fraction form
    156,749.82/216,312.70 = 85,130.30/x
  3. Step 3: Cross multiply
    156,749.82x = 216,312.70 × 85,130.30
  4. Step 4: Simplify right side
    156,749.82x = 18,414,765,044.81
  5. Step 5: Solve for x
    x = 18,414,765,044.81/156,749.82
  6. Step 6: Final answer
    x = 117,478.70

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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.