Home / 138,124,838.64-190,616,788.74-75,404,280.90

Finding the Fourth Proportional to 138,124,838.64, 190,616,788.74 and 75,404,280.90

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Solution

The fourth proportional to 138,124,838.64, 190,616,788.74 and 75,404,280.90 is: 104,060,370.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,124,838.64 : 190,616,788.74 = 75,404,280.90 : x
  2. Step 2: Convert to fraction form
    138,124,838.64/190,616,788.74 = 75,404,280.90/x
  3. Step 3: Cross multiply
    138,124,838.64x = 190,616,788.74 × 75,404,280.90
  4. Step 4: Simplify right side
    138,124,838.64x = 14,373,321,882,406,918
  5. Step 5: Solve for x
    x = 14,373,321,882,406,918/138,124,838.64
  6. Step 6: Final answer
    x = 104,060,370.49

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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.