Home / 138,772,393.71-191,506,128.39-76,038,522.87

Finding the Fourth Proportional to 138,772,393.71, 191,506,128.39 and 76,038,522.87

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Solution

The fourth proportional to 138,772,393.71, 191,506,128.39 and 76,038,522.87 is: 104,933,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,772,393.71 : 191,506,128.39 = 76,038,522.87 : x
  2. Step 2: Convert to fraction form
    138,772,393.71/191,506,128.39 = 76,038,522.87/x
  3. Step 3: Cross multiply
    138,772,393.71x = 191,506,128.39 × 76,038,522.87
  4. Step 4: Simplify right side
    138,772,393.71x = 14,561,843,123,328,172
  5. Step 5: Solve for x
    x = 14,561,843,123,328,172/138,772,393.71
  6. Step 6: Final answer
    x = 104,933,284.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.