Home / 103,219.47-142,382.34-64,918.22

Finding the Fourth Proportional to 103,219.47, 142,382.34 and 64,918.22

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Solution

The fourth proportional to 103,219.47, 142,382.34 and 64,918.22 is: 89,549.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,219.47 : 142,382.34 = 64,918.22 : x
  2. Step 2: Convert to fraction form
    103,219.47/142,382.34 = 64,918.22/x
  3. Step 3: Cross multiply
    103,219.47x = 142,382.34 × 64,918.22
  4. Step 4: Simplify right side
    103,219.47x = 9,243,207,360.32
  5. Step 5: Solve for x
    x = 9,243,207,360.32/103,219.47
  6. Step 6: Final answer
    x = 89,549.07

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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.