Home / 139,969,208.40-209,953,812.60-42,924,145.20

Finding the Fourth Proportional to 139,969,208.40, 209,953,812.60 and 42,924,145.20

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Solution

The fourth proportional to 139,969,208.40, 209,953,812.60 and 42,924,145.20 is: 64,386,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,208.40 : 209,953,812.60 = 42,924,145.20 : x
  2. Step 2: Convert to fraction form
    139,969,208.40/209,953,812.60 = 42,924,145.20/x
  3. Step 3: Cross multiply
    139,969,208.40x = 209,953,812.60 × 42,924,145.20
  4. Step 4: Simplify right side
    139,969,208.40x = 9,012,087,937,335,990
  5. Step 5: Solve for x
    x = 9,012,087,937,335,990/139,969,208.40
  6. Step 6: Final answer
    x = 64,386,217.80

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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.