Home / 139,038.40-208,538.24-45,532.16

Finding the Fourth Proportional to 139,038.40, 208,538.24 and 45,532.16

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Solution

The fourth proportional to 139,038.40, 208,538.24 and 45,532.16 is: 68,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,038.40 : 208,538.24 = 45,532.16 : x
  2. Step 2: Convert to fraction form
    139,038.40/208,538.24 = 45,532.16/x
  3. Step 3: Cross multiply
    139,038.40x = 208,538.24 × 45,532.16
  4. Step 4: Simplify right side
    139,038.40x = 9,495,196,509.80
  5. Step 5: Solve for x
    x = 9,495,196,509.80/139,038.40
  6. Step 6: Final answer
    x = 68,291.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.