Home / 128,051.83-176,712.18-70,690.12

Finding the Fourth Proportional to 128,051.83, 176,712.18 and 70,690.12

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Solution

The fourth proportional to 128,051.83, 176,712.18 and 70,690.12 is: 97,552.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051.83 : 176,712.18 = 70,690.12 : x
  2. Step 2: Convert to fraction form
    128,051.83/176,712.18 = 70,690.12/x
  3. Step 3: Cross multiply
    128,051.83x = 176,712.18 × 70,690.12
  4. Step 4: Simplify right side
    128,051.83x = 12,491,805,209.66
  5. Step 5: Solve for x
    x = 12,491,805,209.66/128,051.83
  6. Step 6: Final answer
    x = 97,552.73

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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.