Home / 103,426.60-155,139.90-92,151.40

Finding the Fourth Proportional to 103,426.60, 155,139.90 and 92,151.40

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Solution

The fourth proportional to 103,426.60, 155,139.90 and 92,151.40 is: 138,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,426.60 : 155,139.90 = 92,151.40 : x
  2. Step 2: Convert to fraction form
    103,426.60/155,139.90 = 92,151.40/x
  3. Step 3: Cross multiply
    103,426.60x = 155,139.90 × 92,151.40
  4. Step 4: Simplify right side
    103,426.60x = 14,296,358,980.86
  5. Step 5: Solve for x
    x = 14,296,358,980.86/103,426.60
  6. Step 6: Final answer
    x = 138,227.10

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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.