Home / 145,547.80-218,321.70-126,302.20

Finding the Fourth Proportional to 145,547.80, 218,321.70 and 126,302.20

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Solution

The fourth proportional to 145,547.80, 218,321.70 and 126,302.20 is: 189,453.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,547.80 : 218,321.70 = 126,302.20 : x
  2. Step 2: Convert to fraction form
    145,547.80/218,321.70 = 126,302.20/x
  3. Step 3: Cross multiply
    145,547.80x = 218,321.70 × 126,302.20
  4. Step 4: Simplify right side
    145,547.80x = 27,574,511,017.74
  5. Step 5: Solve for x
    x = 27,574,511,017.74/145,547.80
  6. Step 6: Final answer
    x = 189,453.30

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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.