Home / 103,549.44-142,946.34-78,066.12

Finding the Fourth Proportional to 103,549.44, 142,946.34 and 78,066.12

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Solution

The fourth proportional to 103,549.44, 142,946.34 and 78,066.12 is: 107,767.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,549.44 : 142,946.34 = 78,066.12 : x
  2. Step 2: Convert to fraction form
    103,549.44/142,946.34 = 78,066.12/x
  3. Step 3: Cross multiply
    103,549.44x = 142,946.34 × 78,066.12
  4. Step 4: Simplify right side
    103,549.44x = 11,159,266,132.00
  5. Step 5: Solve for x
    x = 11,159,266,132.00/103,549.44
  6. Step 6: Final answer
    x = 107,767.52

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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.