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Finding the Fourth Proportional to 153,490.69, 230,268.98 and 86,962.69

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Solution

The fourth proportional to 153,490.69, 230,268.98 and 86,962.69 is: 130,462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,490.69 : 230,268.98 = 86,962.69 : x
  2. Step 2: Convert to fraction form
    153,490.69/230,268.98 = 86,962.69/x
  3. Step 3: Cross multiply
    153,490.69x = 230,268.98 × 86,962.69
  4. Step 4: Simplify right side
    153,490.69x = 20,024,809,489.54
  5. Step 5: Solve for x
    x = 20,024,809,489.54/153,490.69
  6. Step 6: Final answer
    x = 130,462.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.