Home / 190,402.47-285,643.80-72,071.19

Finding the Fourth Proportional to 190,402.47, 285,643.80 and 72,071.19

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Solution

The fourth proportional to 190,402.47, 285,643.80 and 72,071.19 is: 108,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,402.47 : 285,643.80 = 72,071.19 : x
  2. Step 2: Convert to fraction form
    190,402.47/285,643.80 = 72,071.19/x
  3. Step 3: Cross multiply
    190,402.47x = 285,643.80 × 72,071.19
  4. Step 4: Simplify right side
    190,402.47x = 20,586,688,582.12
  5. Step 5: Solve for x
    x = 20,586,688,582.12/190,402.47
  6. Step 6: Final answer
    x = 108,121.96

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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.