Home / 99,079.08-136,724.81-56,640.35

Finding the Fourth Proportional to 99,079.08, 136,724.81 and 56,640.35

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Solution

The fourth proportional to 99,079.08, 136,724.81 and 56,640.35 is: 78,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,079.08 : 136,724.81 = 56,640.35 : x
  2. Step 2: Convert to fraction form
    99,079.08/136,724.81 = 56,640.35/x
  3. Step 3: Cross multiply
    99,079.08x = 136,724.81 × 56,640.35
  4. Step 4: Simplify right side
    99,079.08x = 7,744,140,125.26
  5. Step 5: Solve for x
    x = 7,744,140,125.26/99,079.08
  6. Step 6: Final answer
    x = 78,161.20

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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.