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Finding the Fourth Proportional to 147,649.48, 203,754.51 and 83,987.13

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Solution

The fourth proportional to 147,649.48, 203,754.51 and 83,987.13 is: 115,901.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,649.48 : 203,754.51 = 83,987.13 : x
  2. Step 2: Convert to fraction form
    147,649.48/203,754.51 = 83,987.13/x
  3. Step 3: Cross multiply
    147,649.48x = 203,754.51 × 83,987.13
  4. Step 4: Simplify right side
    147,649.48x = 17,112,756,373.63
  5. Step 5: Solve for x
    x = 17,112,756,373.63/147,649.48
  6. Step 6: Final answer
    x = 115,901.23

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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.