Home / 142,830.74-214,396.77-139,613.76

Finding the Fourth Proportional to 142,830.74, 214,396.77 and 139,613.76

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Solution

The fourth proportional to 142,830.74, 214,396.77 and 139,613.76 is: 209,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,830.74 : 214,396.77 = 139,613.76 : x
  2. Step 2: Convert to fraction form
    142,830.74/214,396.77 = 139,613.76/x
  3. Step 3: Cross multiply
    142,830.74x = 214,396.77 × 139,613.76
  4. Step 4: Simplify right side
    142,830.74x = 29,932,739,715.11
  5. Step 5: Solve for x
    x = 29,932,739,715.11/142,830.74
  6. Step 6: Final answer
    x = 209,567.91

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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.