Home / 109,637.69-151,306.08-77,382.62

Finding the Fourth Proportional to 109,637.69, 151,306.08 and 77,382.62

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Solution

The fourth proportional to 109,637.69, 151,306.08 and 77,382.62 is: 106,792.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,637.69 : 151,306.08 = 77,382.62 : x
  2. Step 2: Convert to fraction form
    109,637.69/151,306.08 = 77,382.62/x
  3. Step 3: Cross multiply
    109,637.69x = 151,306.08 × 77,382.62
  4. Step 4: Simplify right side
    109,637.69x = 11,708,460,135.80
  5. Step 5: Solve for x
    x = 11,708,460,135.80/109,637.69
  6. Step 6: Final answer
    x = 106,792.30

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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.