Home / 139,133.04-208,656.36-45,618

Finding the Fourth Proportional to 139,133.04, 208,656.36 and 45,618

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Solution

The fourth proportional to 139,133.04, 208,656.36 and 45,618 is: 68,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,133.04 : 208,656.36 = 45,618 : x
  2. Step 2: Convert to fraction form
    139,133.04/208,656.36 = 45,618/x
  3. Step 3: Cross multiply
    139,133.04x = 208,656.36 × 45,618
  4. Step 4: Simplify right side
    139,133.04x = 9,518,485,830.48
  5. Step 5: Solve for x
    x = 9,518,485,830.48/139,133.04
  6. Step 6: Final answer
    x = 68,412.84

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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.