Home / 142,683.60-196,897.92-78,151.80

Finding the Fourth Proportional to 142,683.60, 196,897.92 and 78,151.80

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Solution

The fourth proportional to 142,683.60, 196,897.92 and 78,151.80 is: 107,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,683.60 : 196,897.92 = 78,151.80 : x
  2. Step 2: Convert to fraction form
    142,683.60/196,897.92 = 78,151.80/x
  3. Step 3: Cross multiply
    142,683.60x = 196,897.92 × 78,151.80
  4. Step 4: Simplify right side
    142,683.60x = 15,387,926,864.26
  5. Step 5: Solve for x
    x = 15,387,926,864.26/142,683.60
  6. Step 6: Final answer
    x = 107,846.50

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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.