Home / 145,328.72-218,066.04-66,435.92

Finding the Fourth Proportional to 145,328.72, 218,066.04 and 66,435.92

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Solution

The fourth proportional to 145,328.72, 218,066.04 and 66,435.92 is: 99,687.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328.72 : 218,066.04 = 66,435.92 : x
  2. Step 2: Convert to fraction form
    145,328.72/218,066.04 = 66,435.92/x
  3. Step 3: Cross multiply
    145,328.72x = 218,066.04 × 66,435.92
  4. Step 4: Simplify right side
    145,328.72x = 14,487,417,988.16
  5. Step 5: Solve for x
    x = 14,487,417,988.16/145,328.72
  6. Step 6: Final answer
    x = 99,687.23

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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.