Home / 142,840.02-197,117.28-79,176.48

Finding the Fourth Proportional to 142,840.02, 197,117.28 and 79,176.48

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Solution

The fourth proportional to 142,840.02, 197,117.28 and 79,176.48 is: 109,262.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,840.02 : 197,117.28 = 79,176.48 : x
  2. Step 2: Convert to fraction form
    142,840.02/197,117.28 = 79,176.48/x
  3. Step 3: Cross multiply
    142,840.02x = 197,117.28 × 79,176.48
  4. Step 4: Simplify right side
    142,840.02x = 15,607,052,377.57
  5. Step 5: Solve for x
    x = 15,607,052,377.57/142,840.02
  6. Step 6: Final answer
    x = 109,262.46

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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.