Home / 142,066.13-196,045.53-78,403.10

Finding the Fourth Proportional to 142,066.13, 196,045.53 and 78,403.10

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Solution

The fourth proportional to 142,066.13, 196,045.53 and 78,403.10 is: 108,193.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,066.13 : 196,045.53 = 78,403.10 : x
  2. Step 2: Convert to fraction form
    142,066.13/196,045.53 = 78,403.10/x
  3. Step 3: Cross multiply
    142,066.13x = 196,045.53 × 78,403.10
  4. Step 4: Simplify right side
    142,066.13x = 15,370,577,293.14
  5. Step 5: Solve for x
    x = 15,370,577,293.14/142,066.13
  6. Step 6: Final answer
    x = 108,193.12

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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.