Home / 139,163,142.27-192,039,875.06-77,287,466.64

Finding the Fourth Proportional to 139,163,142.27, 192,039,875.06 and 77,287,466.64

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Solution

The fourth proportional to 139,163,142.27, 192,039,875.06 and 77,287,466.64 is: 106,653,781.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163,142.27 : 192,039,875.06 = 77,287,466.64 : x
  2. Step 2: Convert to fraction form
    139,163,142.27/192,039,875.06 = 77,287,466.64/x
  3. Step 3: Cross multiply
    139,163,142.27x = 192,039,875.06 × 77,287,466.64
  4. Step 4: Simplify right side
    139,163,142.27x = 14,842,275,437,249,518
  5. Step 5: Solve for x
    x = 14,842,275,437,249,518/139,163,142.27
  6. Step 6: Final answer
    x = 106,653,781.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.