Home / 138,287,263.68-190,836,032.13-76,407,161.40

Finding the Fourth Proportional to 138,287,263.68, 190,836,032.13 and 76,407,161.40

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Solution

The fourth proportional to 138,287,263.68, 190,836,032.13 and 76,407,161.40 is: 105,441,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287,263.68 : 190,836,032.13 = 76,407,161.40 : x
  2. Step 2: Convert to fraction form
    138,287,263.68/190,836,032.13 = 76,407,161.40/x
  3. Step 3: Cross multiply
    138,287,263.68x = 190,836,032.13 × 76,407,161.40
  4. Step 4: Simplify right side
    138,287,263.68x = 14,581,239,507,892,496
  5. Step 5: Solve for x
    x = 14,581,239,507,892,496/138,287,263.68
  6. Step 6: Final answer
    x = 105,441,666.28

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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.