Home / 141,802.55-195,686.58-78,140.40

Finding the Fourth Proportional to 141,802.55, 195,686.58 and 78,140.40

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Solution

The fourth proportional to 141,802.55, 195,686.58 and 78,140.40 is: 107,833.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,802.55 : 195,686.58 = 78,140.40 : x
  2. Step 2: Convert to fraction form
    141,802.55/195,686.58 = 78,140.40/x
  3. Step 3: Cross multiply
    141,802.55x = 195,686.58 × 78,140.40
  4. Step 4: Simplify right side
    141,802.55x = 15,291,027,195.03
  5. Step 5: Solve for x
    x = 15,291,027,195.03/141,802.55
  6. Step 6: Final answer
    x = 107,833.23

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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.