Home / 153,283.20-211,550.40-86,214.72

Finding the Fourth Proportional to 153,283.20, 211,550.40 and 86,214.72

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Solution

The fourth proportional to 153,283.20, 211,550.40 and 86,214.72 is: 118,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,283.20 : 211,550.40 = 86,214.72 : x
  2. Step 2: Convert to fraction form
    153,283.20/211,550.40 = 86,214.72/x
  3. Step 3: Cross multiply
    153,283.20x = 211,550.40 × 86,214.72
  4. Step 4: Simplify right side
    153,283.20x = 18,238,758,501.89
  5. Step 5: Solve for x
    x = 18,238,758,501.89/153,283.20
  6. Step 6: Final answer
    x = 118,987.33

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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.