Home / 128,002.60-176,653.52-70,653.16

Finding the Fourth Proportional to 128,002.60, 176,653.52 and 70,653.16

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Solution

The fourth proportional to 128,002.60, 176,653.52 and 70,653.16 is: 97,506.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002.60 : 176,653.52 = 70,653.16 : x
  2. Step 2: Convert to fraction form
    128,002.60/176,653.52 = 70,653.16/x
  3. Step 3: Cross multiply
    128,002.60x = 176,653.52 × 70,653.16
  4. Step 4: Simplify right side
    128,002.60x = 12,481,129,413.12
  5. Step 5: Solve for x
    x = 12,481,129,413.12/128,002.60
  6. Step 6: Final answer
    x = 97,506.84

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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.