Home / 156,749.48-216,312.42-85,130.60

Finding the Fourth Proportional to 156,749.48, 216,312.42 and 85,130.60

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Solution

The fourth proportional to 156,749.48, 216,312.42 and 85,130.60 is: 117,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.48 : 216,312.42 = 85,130.60 : x
  2. Step 2: Convert to fraction form
    156,749.48/216,312.42 = 85,130.60/x
  3. Step 3: Cross multiply
    156,749.48x = 216,312.42 × 85,130.60
  4. Step 4: Simplify right side
    156,749.48x = 18,414,806,102.05
  5. Step 5: Solve for x
    x = 18,414,806,102.05/156,749.48
  6. Step 6: Final answer
    x = 117,479.22

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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.