Home / 145,164,939.40-217,747,409.10-128,158,827.40

Finding the Fourth Proportional to 145,164,939.40, 217,747,409.10 and 128,158,827.40

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Solution

The fourth proportional to 145,164,939.40, 217,747,409.10 and 128,158,827.40 is: 192,238,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,164,939.40 : 217,747,409.10 = 128,158,827.40 : x
  2. Step 2: Convert to fraction form
    145,164,939.40/217,747,409.10 = 128,158,827.40/x
  3. Step 3: Cross multiply
    145,164,939.40x = 217,747,409.10 × 128,158,827.40
  4. Step 4: Simplify right side
    145,164,939.40x = 27,906,252,619,644,088
  5. Step 5: Solve for x
    x = 27,906,252,619,644,088/145,164,939.40
  6. Step 6: Final answer
    x = 192,238,241.10

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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.