Home / 123,503.15-170,432.12-69,787

Finding the Fourth Proportional to 123,503.15, 170,432.12 and 69,787

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Solution

The fourth proportional to 123,503.15, 170,432.12 and 69,787 is: 96,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,503.15 : 170,432.12 = 69,787 : x
  2. Step 2: Convert to fraction form
    123,503.15/170,432.12 = 69,787/x
  3. Step 3: Cross multiply
    123,503.15x = 170,432.12 × 69,787
  4. Step 4: Simplify right side
    123,503.15x = 11,893,946,009.51
  5. Step 5: Solve for x
    x = 11,893,946,009.51/123,503.15
  6. Step 6: Final answer
    x = 96,304.80

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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.