Home / 190,498.02-285,726.87-78,190.08

Finding the Fourth Proportional to 190,498.02, 285,726.87 and 78,190.08

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Solution

The fourth proportional to 190,498.02, 285,726.87 and 78,190.08 is: 117,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,498.02 : 285,726.87 = 78,190.08 : x
  2. Step 2: Convert to fraction form
    190,498.02/285,726.87 = 78,190.08/x
  3. Step 3: Cross multiply
    190,498.02x = 285,726.87 × 78,190.08
  4. Step 4: Simplify right side
    190,498.02x = 22,341,006,823.45
  5. Step 5: Solve for x
    x = 22,341,006,823.45/190,498.02
  6. Step 6: Final answer
    x = 117,276.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.