Home / 109,549.21-151,177.47-61,802.56

Finding the Fourth Proportional to 109,549.21, 151,177.47 and 61,802.56

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Solution

The fourth proportional to 109,549.21, 151,177.47 and 61,802.56 is: 85,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,549.21 : 151,177.47 = 61,802.56 : x
  2. Step 2: Convert to fraction form
    109,549.21/151,177.47 = 61,802.56/x
  3. Step 3: Cross multiply
    109,549.21x = 151,177.47 × 61,802.56
  4. Step 4: Simplify right side
    109,549.21x = 9,343,154,660.32
  5. Step 5: Solve for x
    x = 9,343,154,660.32/109,549.21
  6. Step 6: Final answer
    x = 85,287.28

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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.