Home / 113,142.45-156,119.24-65,386.58

Finding the Fourth Proportional to 113,142.45, 156,119.24 and 65,386.58

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Solution

The fourth proportional to 113,142.45, 156,119.24 and 65,386.58 is: 90,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,142.45 : 156,119.24 = 65,386.58 : x
  2. Step 2: Convert to fraction form
    113,142.45/156,119.24 = 65,386.58/x
  3. Step 3: Cross multiply
    113,142.45x = 156,119.24 × 65,386.58
  4. Step 4: Simplify right side
    113,142.45x = 10,208,102,848.87
  5. Step 5: Solve for x
    x = 10,208,102,848.87/113,142.45
  6. Step 6: Final answer
    x = 90,223.46

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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.