Home / 122,575.04-169,041.16-79,509.64

Finding the Fourth Proportional to 122,575.04, 169,041.16 and 79,509.64

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Solution

The fourth proportional to 122,575.04, 169,041.16 and 79,509.64 is: 109,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,575.04 : 169,041.16 = 79,509.64 : x
  2. Step 2: Convert to fraction form
    122,575.04/169,041.16 = 79,509.64/x
  3. Step 3: Cross multiply
    122,575.04x = 169,041.16 × 79,509.64
  4. Step 4: Simplify right side
    122,575.04x = 13,440,401,776.78
  5. Step 5: Solve for x
    x = 13,440,401,776.78/122,575.04
  6. Step 6: Final answer
    x = 109,650.40

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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.