Home / 139,163,155.04-192,039,892.64-77,287,479.36

Finding the Fourth Proportional to 139,163,155.04, 192,039,892.64 and 77,287,479.36

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Solution

The fourth proportional to 139,163,155.04, 192,039,892.64 and 77,287,479.36 is: 106,653,799.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163,155.04 : 192,039,892.64 = 77,287,479.36 : x
  2. Step 2: Convert to fraction form
    139,163,155.04/192,039,892.64 = 77,287,479.36/x
  3. Step 3: Cross multiply
    139,163,155.04x = 192,039,892.64 × 77,287,479.36
  4. Step 4: Simplify right side
    139,163,155.04x = 14,842,279,238,710,614
  5. Step 5: Solve for x
    x = 14,842,279,238,710,614/139,163,155.04
  6. Step 6: Final answer
    x = 106,653,799.52

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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.