Home / 128,034.16-176,669.58-71,434.60

Finding the Fourth Proportional to 128,034.16, 176,669.58 and 71,434.60

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Solution

The fourth proportional to 128,034.16, 176,669.58 and 71,434.60 is: 98,569.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,034.16 : 176,669.58 = 71,434.60 : x
  2. Step 2: Convert to fraction form
    128,034.16/176,669.58 = 71,434.60/x
  3. Step 3: Cross multiply
    128,034.16x = 176,669.58 × 71,434.60
  4. Step 4: Simplify right side
    128,034.16x = 12,620,320,779.47
  5. Step 5: Solve for x
    x = 12,620,320,779.47/128,034.16
  6. Step 6: Final answer
    x = 98,569.95

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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.