Home / 109,209,620.20-163,814,430.30-91,990,931.80

Finding the Fourth Proportional to 109,209,620.20, 163,814,430.30 and 91,990,931.80

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Solution

The fourth proportional to 109,209,620.20, 163,814,430.30 and 91,990,931.80 is: 137,986,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,209,620.20 : 163,814,430.30 = 91,990,931.80 : x
  2. Step 2: Convert to fraction form
    109,209,620.20/163,814,430.30 = 91,990,931.80/x
  3. Step 3: Cross multiply
    109,209,620.20x = 163,814,430.30 × 91,990,931.80
  4. Step 4: Simplify right side
    109,209,620.20x = 15,069,442,085,583,154
  5. Step 5: Solve for x
    x = 15,069,442,085,583,154/109,209,620.20
  6. Step 6: Final answer
    x = 137,986,397.70

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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.