Home / 129,210.80-193,686.60-59,140.40

Finding the Fourth Proportional to 129,210.80, 193,686.60 and 59,140.40

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Solution

The fourth proportional to 129,210.80, 193,686.60 and 59,140.40 is: 88,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,210.80 : 193,686.60 = 59,140.40 : x
  2. Step 2: Convert to fraction form
    129,210.80/193,686.60 = 59,140.40/x
  3. Step 3: Cross multiply
    129,210.80x = 193,686.60 × 59,140.40
  4. Step 4: Simplify right side
    129,210.80x = 11,454,702,998.64
  5. Step 5: Solve for x
    x = 11,454,702,998.64/129,210.80
  6. Step 6: Final answer
    x = 88,651.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.