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Finding the Fourth Proportional to 145,259.96, 200,425.88 and 87,897.85

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Solution

The fourth proportional to 145,259.96, 200,425.88 and 87,897.85 is: 121,279.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,259.96 : 200,425.88 = 87,897.85 : x
  2. Step 2: Convert to fraction form
    145,259.96/200,425.88 = 87,897.85/x
  3. Step 3: Cross multiply
    145,259.96x = 200,425.88 × 87,897.85
  4. Step 4: Simplify right side
    145,259.96x = 17,617,003,655.04
  5. Step 5: Solve for x
    x = 17,617,003,655.04/145,259.96
  6. Step 6: Final answer
    x = 121,279.15

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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.