Home / 120,272,336.79-165,975,931.40-65,268,193.11

Finding the Fourth Proportional to 120,272,336.79, 165,975,931.40 and 65,268,193.11

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Solution

The fourth proportional to 120,272,336.79, 165,975,931.40 and 65,268,193.11 is: 90,070,164.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,272,336.79 : 165,975,931.40 = 65,268,193.11 : x
  2. Step 2: Convert to fraction form
    120,272,336.79/165,975,931.40 = 65,268,193.11/x
  3. Step 3: Cross multiply
    120,272,336.79x = 165,975,931.40 × 65,268,193.11
  4. Step 4: Simplify right side
    120,272,336.79x = 10,832,949,141,900,972
  5. Step 5: Solve for x
    x = 10,832,949,141,900,972/120,272,336.79
  6. Step 6: Final answer
    x = 90,070,164.35

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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.