Home / 137,447,318.51-189,681,041.15-74,727,636.65

Finding the Fourth Proportional to 137,447,318.51, 189,681,041.15 and 74,727,636.65

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Solution

The fourth proportional to 137,447,318.51, 189,681,041.15 and 74,727,636.65 is: 103,126,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,447,318.51 : 189,681,041.15 = 74,727,636.65 : x
  2. Step 2: Convert to fraction form
    137,447,318.51/189,681,041.15 = 74,727,636.65/x
  3. Step 3: Cross multiply
    137,447,318.51x = 189,681,041.15 × 74,727,636.65
  4. Step 4: Simplify right side
    137,447,318.51x = 14,174,415,922,120,390
  5. Step 5: Solve for x
    x = 14,174,415,922,120,390/137,447,318.51
  6. Step 6: Final answer
    x = 103,126,172.82

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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.