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Finding the Fourth Proportional to 170,897.60, 256,346.40 and 123,658.40

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Solution

The fourth proportional to 170,897.60, 256,346.40 and 123,658.40 is: 185,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,897.60 : 256,346.40 = 123,658.40 : x
  2. Step 2: Convert to fraction form
    170,897.60/256,346.40 = 123,658.40/x
  3. Step 3: Cross multiply
    170,897.60x = 256,346.40 × 123,658.40
  4. Step 4: Simplify right side
    170,897.60x = 31,699,385,669.76
  5. Step 5: Solve for x
    x = 31,699,385,669.76/170,897.60
  6. Step 6: Final answer
    x = 185,487.60

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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.