Home / 145,407.64-217,955.94-66,403.48

Finding the Fourth Proportional to 145,407.64, 217,955.94 and 66,403.48

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Solution

The fourth proportional to 145,407.64, 217,955.94 and 66,403.48 is: 99,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,407.64 : 217,955.94 = 66,403.48 : x
  2. Step 2: Convert to fraction form
    145,407.64/217,955.94 = 66,403.48/x
  3. Step 3: Cross multiply
    145,407.64x = 217,955.94 × 66,403.48
  4. Step 4: Simplify right side
    145,407.64x = 14,473,032,902.67
  5. Step 5: Solve for x
    x = 14,473,032,902.67/145,407.64
  6. Step 6: Final answer
    x = 99,534.20

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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.