Home / 142,012.73-195,973.74-78,349.16

Finding the Fourth Proportional to 142,012.73, 195,973.74 and 78,349.16

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Solution

The fourth proportional to 142,012.73, 195,973.74 and 78,349.16 is: 108,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,012.73 : 195,973.74 = 78,349.16 : x
  2. Step 2: Convert to fraction form
    142,012.73/195,973.74 = 78,349.16/x
  3. Step 3: Cross multiply
    142,012.73x = 195,973.74 × 78,349.16
  4. Step 4: Simplify right side
    142,012.73x = 15,354,376,931.19
  5. Step 5: Solve for x
    x = 15,354,376,931.19/142,012.73
  6. Step 6: Final answer
    x = 108,119.73

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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.