Home / 142,009.02-195,973.49-78,349.10

Finding the Fourth Proportional to 142,009.02, 195,973.49 and 78,349.10

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Solution

The fourth proportional to 142,009.02, 195,973.49 and 78,349.10 is: 108,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,009.02 : 195,973.49 = 78,349.10 : x
  2. Step 2: Convert to fraction form
    142,009.02/195,973.49 = 78,349.10/x
  3. Step 3: Cross multiply
    142,009.02x = 195,973.49 × 78,349.10
  4. Step 4: Simplify right side
    142,009.02x = 15,354,345,781.36
  5. Step 5: Solve for x
    x = 15,354,345,781.36/142,009.02
  6. Step 6: Final answer
    x = 108,122.33

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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.