Home / 153,311.04-211,569.84-86,238.72

Finding the Fourth Proportional to 153,311.04, 211,569.84 and 86,238.72

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Solution

The fourth proportional to 153,311.04, 211,569.84 and 86,238.72 is: 119,009.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,311.04 : 211,569.84 = 86,238.72 : x
  2. Step 2: Convert to fraction form
    153,311.04/211,569.84 = 86,238.72/x
  3. Step 3: Cross multiply
    153,311.04x = 211,569.84 × 86,238.72
  4. Step 4: Simplify right side
    153,311.04x = 18,245,512,192.20
  5. Step 5: Solve for x
    x = 18,245,512,192.20/153,311.04
  6. Step 6: Final answer
    x = 119,009.77

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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.