Home / 155,104.48-213,989.68-101,420.92

Finding the Fourth Proportional to 155,104.48, 213,989.68 and 101,420.92

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Solution

The fourth proportional to 155,104.48, 213,989.68 and 101,420.92 is: 139,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,104.48 : 213,989.68 = 101,420.92 : x
  2. Step 2: Convert to fraction form
    155,104.48/213,989.68 = 101,420.92/x
  3. Step 3: Cross multiply
    155,104.48x = 213,989.68 × 101,420.92
  4. Step 4: Simplify right side
    155,104.48x = 21,703,030,216.11
  5. Step 5: Solve for x
    x = 21,703,030,216.11/155,104.48
  6. Step 6: Final answer
    x = 139,925.23

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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.