Home / 153,395.08-211,685.06-86,328.52

Finding the Fourth Proportional to 153,395.08, 211,685.06 and 86,328.52

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Solution

The fourth proportional to 153,395.08, 211,685.06 and 86,328.52 is: 119,133.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,395.08 : 211,685.06 = 86,328.52 : x
  2. Step 2: Convert to fraction form
    153,395.08/211,685.06 = 86,328.52/x
  3. Step 3: Cross multiply
    153,395.08x = 211,685.06 × 86,328.52
  4. Step 4: Simplify right side
    153,395.08x = 18,274,457,935.91
  5. Step 5: Solve for x
    x = 18,274,457,935.91/153,395.08
  6. Step 6: Final answer
    x = 119,133.27

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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.