Home / 128,016.90-176,661.81-70,656.66

Finding the Fourth Proportional to 128,016.90, 176,661.81 and 70,656.66

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Solution

The fourth proportional to 128,016.90, 176,661.81 and 70,656.66 is: 97,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,016.90 : 176,661.81 = 70,656.66 : x
  2. Step 2: Convert to fraction form
    128,016.90/176,661.81 = 70,656.66/x
  3. Step 3: Cross multiply
    128,016.90x = 176,661.81 × 70,656.66
  4. Step 4: Simplify right side
    128,016.90x = 12,482,333,444.15
  5. Step 5: Solve for x
    x = 12,482,333,444.15/128,016.90
  6. Step 6: Final answer
    x = 97,505.36

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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.