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Finding the Fourth Proportional to 153,595.25, 211,962.49 and 85,616.57

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Solution

The fourth proportional to 153,595.25, 211,962.49 and 85,616.57 is: 118,151.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,595.25 : 211,962.49 = 85,616.57 : x
  2. Step 2: Convert to fraction form
    153,595.25/211,962.49 = 85,616.57/x
  3. Step 3: Cross multiply
    153,595.25x = 211,962.49 × 85,616.57
  4. Step 4: Simplify right side
    153,595.25x = 18,147,501,678.32
  5. Step 5: Solve for x
    x = 18,147,501,678.32/153,595.25
  6. Step 6: Final answer
    x = 118,151.45

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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.