Home / 145,434.80-218,087.40-66,573.20

Finding the Fourth Proportional to 145,434.80, 218,087.40 and 66,573.20

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Solution

The fourth proportional to 145,434.80, 218,087.40 and 66,573.20 is: 99,830.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,434.80 : 218,087.40 = 66,573.20 : x
  2. Step 2: Convert to fraction form
    145,434.80/218,087.40 = 66,573.20/x
  3. Step 3: Cross multiply
    145,434.80x = 218,087.40 × 66,573.20
  4. Step 4: Simplify right side
    145,434.80x = 14,518,776,097.68
  5. Step 5: Solve for x
    x = 14,518,776,097.68/145,434.80
  6. Step 6: Final answer
    x = 99,830.14

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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.