Home / 98,790.12-148,078.89-42,656.66

Finding the Fourth Proportional to 98,790.12, 148,078.89 and 42,656.66

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Solution

The fourth proportional to 98,790.12, 148,078.89 and 42,656.66 is: 63,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,790.12 : 148,078.89 = 42,656.66 : x
  2. Step 2: Convert to fraction form
    98,790.12/148,078.89 = 42,656.66/x
  3. Step 3: Cross multiply
    98,790.12x = 148,078.89 × 42,656.66
  4. Step 4: Simplify right side
    98,790.12x = 6,316,550,123.51
  5. Step 5: Solve for x
    x = 6,316,550,123.51/98,790.12
  6. Step 6: Final answer
    x = 63,939.09

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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.