Home / 145,370.14-218,139.80-61,124.20

Finding the Fourth Proportional to 145,370.14, 218,139.80 and 61,124.20

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Solution

The fourth proportional to 145,370.14, 218,139.80 and 61,124.20 is: 91,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,370.14 : 218,139.80 = 61,124.20 : x
  2. Step 2: Convert to fraction form
    145,370.14/218,139.80 = 61,124.20/x
  3. Step 3: Cross multiply
    145,370.14x = 218,139.80 × 61,124.20
  4. Step 4: Simplify right side
    145,370.14x = 13,333,620,763.16
  5. Step 5: Solve for x
    x = 13,333,620,763.16/145,370.14
  6. Step 6: Final answer
    x = 91,721.87

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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.