Home / 156,749.04-216,315.27-85,130.46

Finding the Fourth Proportional to 156,749.04, 216,315.27 and 85,130.46

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Solution

The fourth proportional to 156,749.04, 216,315.27 and 85,130.46 is: 117,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.04 : 216,315.27 = 85,130.46 : x
  2. Step 2: Convert to fraction form
    156,749.04/216,315.27 = 85,130.46/x
  3. Step 3: Cross multiply
    156,749.04x = 216,315.27 × 85,130.46
  4. Step 4: Simplify right side
    156,749.04x = 18,415,018,440.12
  5. Step 5: Solve for x
    x = 18,415,018,440.12/156,749.04
  6. Step 6: Final answer
    x = 117,480.90

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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.