Home / 128,070.18-176,732.55-70,708.55

Finding the Fourth Proportional to 128,070.18, 176,732.55 and 70,708.55

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Solution

The fourth proportional to 128,070.18, 176,732.55 and 70,708.55 is: 97,575.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,070.18 : 176,732.55 = 70,708.55 : x
  2. Step 2: Convert to fraction form
    128,070.18/176,732.55 = 70,708.55/x
  3. Step 3: Cross multiply
    128,070.18x = 176,732.55 × 70,708.55
  4. Step 4: Simplify right side
    128,070.18x = 12,496,501,464.64
  5. Step 5: Solve for x
    x = 12,496,501,464.64/128,070.18
  6. Step 6: Final answer
    x = 97,575.42

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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.