Home / 100,807.20-139,104.90-58,368.60

Finding the Fourth Proportional to 100,807.20, 139,104.90 and 58,368.60

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Solution

The fourth proportional to 100,807.20, 139,104.90 and 58,368.60 is: 80,543.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,807.20 : 139,104.90 = 58,368.60 : x
  2. Step 2: Convert to fraction form
    100,807.20/139,104.90 = 58,368.60/x
  3. Step 3: Cross multiply
    100,807.20x = 139,104.90 × 58,368.60
  4. Step 4: Simplify right side
    100,807.20x = 8,119,358,266.14
  5. Step 5: Solve for x
    x = 8,119,358,266.14/100,807.20
  6. Step 6: Final answer
    x = 80,543.44

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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.