Home / 117,389.40-162,026.28-72,078.24

Finding the Fourth Proportional to 117,389.40, 162,026.28 and 72,078.24

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Solution

The fourth proportional to 117,389.40, 162,026.28 and 72,078.24 is: 99,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,389.40 : 162,026.28 = 72,078.24 : x
  2. Step 2: Convert to fraction form
    117,389.40/162,026.28 = 72,078.24/x
  3. Step 3: Cross multiply
    117,389.40x = 162,026.28 × 72,078.24
  4. Step 4: Simplify right side
    117,389.40x = 11,678,569,096.15
  5. Step 5: Solve for x
    x = 11,678,569,096.15/117,389.40
  6. Step 6: Final answer
    x = 99,485.72

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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.