Home / 139,968,159.40-209,952,239.10-129,764,492.20

Finding the Fourth Proportional to 139,968,159.40, 209,952,239.10 and 129,764,492.20

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Solution

The fourth proportional to 139,968,159.40, 209,952,239.10 and 129,764,492.20 is: 194,646,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,159.40 : 209,952,239.10 = 129,764,492.20 : x
  2. Step 2: Convert to fraction form
    139,968,159.40/209,952,239.10 = 129,764,492.20/x
  3. Step 3: Cross multiply
    139,968,159.40x = 209,952,239.10 × 129,764,492.20
  4. Step 4: Simplify right side
    139,968,159.40x = 27,244,345,693,064,484
  5. Step 5: Solve for x
    x = 27,244,345,693,064,484/139,968,159.40
  6. Step 6: Final answer
    x = 194,646,738.30

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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.