Home / 99,639,984.30-149,459,976.45-72,430,205.10

Finding the Fourth Proportional to 99,639,984.30, 149,459,976.45 and 72,430,205.10

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Solution

The fourth proportional to 99,639,984.30, 149,459,976.45 and 72,430,205.10 is: 108,645,307.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639,984.30 : 149,459,976.45 = 72,430,205.10 : x
  2. Step 2: Convert to fraction form
    99,639,984.30/149,459,976.45 = 72,430,205.10/x
  3. Step 3: Cross multiply
    99,639,984.30x = 149,459,976.45 × 72,430,205.10
  4. Step 4: Simplify right side
    99,639,984.30x = 10,825,416,748,514,668
  5. Step 5: Solve for x
    x = 10,825,416,748,514,668/99,639,984.30
  6. Step 6: Final answer
    x = 108,645,307.65

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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.