Home / 129,359,659.20-194,039,488.80-118,778,078.40

Finding the Fourth Proportional to 129,359,659.20, 194,039,488.80 and 118,778,078.40

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Solution

The fourth proportional to 129,359,659.20, 194,039,488.80 and 118,778,078.40 is: 178,167,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,359,659.20 : 194,039,488.80 = 118,778,078.40 : x
  2. Step 2: Convert to fraction form
    129,359,659.20/194,039,488.80 = 118,778,078.40/x
  3. Step 3: Cross multiply
    129,359,659.20x = 194,039,488.80 × 118,778,078.40
  4. Step 4: Simplify right side
    129,359,659.20x = 23,047,637,613,382,324
  5. Step 5: Solve for x
    x = 23,047,637,613,382,324/129,359,659.20
  6. Step 6: Final answer
    x = 178,167,117.60

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1.5x scale

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.