Home / 128,256.88-176,994.04-71,668.24

Finding the Fourth Proportional to 128,256.88, 176,994.04 and 71,668.24

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Solution

The fourth proportional to 128,256.88, 176,994.04 and 71,668.24 is: 98,901.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,256.88 : 176,994.04 = 71,668.24 : x
  2. Step 2: Convert to fraction form
    128,256.88/176,994.04 = 71,668.24/x
  3. Step 3: Cross multiply
    128,256.88x = 176,994.04 × 71,668.24
  4. Step 4: Simplify right side
    128,256.88x = 12,684,851,337.29
  5. Step 5: Solve for x
    x = 12,684,851,337.29/128,256.88
  6. Step 6: Final answer
    x = 98,901.92

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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.