Home / 155,399.04-214,453.17-87,430.32

Finding the Fourth Proportional to 155,399.04, 214,453.17 and 87,430.32

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Solution

The fourth proportional to 155,399.04, 214,453.17 and 87,430.32 is: 120,655.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,399.04 : 214,453.17 = 87,430.32 : x
  2. Step 2: Convert to fraction form
    155,399.04/214,453.17 = 87,430.32/x
  3. Step 3: Cross multiply
    155,399.04x = 214,453.17 × 87,430.32
  4. Step 4: Simplify right side
    155,399.04x = 18,749,709,278.11
  5. Step 5: Solve for x
    x = 18,749,709,278.11/155,399.04
  6. Step 6: Final answer
    x = 120,655.25

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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.