Home / 139,776,020.20-209,664,030.30-91,403,079.40

Finding the Fourth Proportional to 139,776,020.20, 209,664,030.30 and 91,403,079.40

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Solution

The fourth proportional to 139,776,020.20, 209,664,030.30 and 91,403,079.40 is: 137,104,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,776,020.20 : 209,664,030.30 = 91,403,079.40 : x
  2. Step 2: Convert to fraction form
    139,776,020.20/209,664,030.30 = 91,403,079.40/x
  3. Step 3: Cross multiply
    139,776,020.20x = 209,664,030.30 × 91,403,079.40
  4. Step 4: Simplify right side
    139,776,020.20x = 19,163,938,008,834,908
  5. Step 5: Solve for x
    x = 19,163,938,008,834,908/139,776,020.20
  6. Step 6: Final answer
    x = 137,104,619.10

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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.