Home / 128,151.22-176,841.36-76,526.57

Finding the Fourth Proportional to 128,151.22, 176,841.36 and 76,526.57

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Solution

The fourth proportional to 128,151.22, 176,841.36 and 76,526.57 is: 105,602.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.22 : 176,841.36 = 76,526.57 : x
  2. Step 2: Convert to fraction form
    128,151.22/176,841.36 = 76,526.57/x
  3. Step 3: Cross multiply
    128,151.22x = 176,841.36 × 76,526.57
  4. Step 4: Simplify right side
    128,151.22x = 13,533,062,714.94
  5. Step 5: Solve for x
    x = 13,533,062,714.94/128,151.22
  6. Step 6: Final answer
    x = 105,602.29

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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.