Home / 128,026.98-176,688.95-70,676.55

Finding the Fourth Proportional to 128,026.98, 176,688.95 and 70,676.55

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Solution

The fourth proportional to 128,026.98, 176,688.95 and 70,676.55 is: 97,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,026.98 : 176,688.95 = 70,676.55 : x
  2. Step 2: Convert to fraction form
    128,026.98/176,688.95 = 70,676.55/x
  3. Step 3: Cross multiply
    128,026.98x = 176,688.95 × 70,676.55
  4. Step 4: Simplify right side
    128,026.98x = 12,487,765,055.74
  5. Step 5: Solve for x
    x = 12,487,765,055.74/128,026.98
  6. Step 6: Final answer
    x = 97,540.10

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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.