Home / 153,503.09-211,849.84-85,531.13

Finding the Fourth Proportional to 153,503.09, 211,849.84 and 85,531.13

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Solution

The fourth proportional to 153,503.09, 211,849.84 and 85,531.13 is: 118,041.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,503.09 : 211,849.84 = 85,531.13 : x
  2. Step 2: Convert to fraction form
    153,503.09/211,849.84 = 85,531.13/x
  3. Step 3: Cross multiply
    153,503.09x = 211,849.84 × 85,531.13
  4. Step 4: Simplify right side
    153,503.09x = 18,119,756,205.52
  5. Step 5: Solve for x
    x = 18,119,756,205.52/153,503.09
  6. Step 6: Final answer
    x = 118,041.64

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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.