Home / 190,735.32-286,090.26-78,386.46

Finding the Fourth Proportional to 190,735.32, 286,090.26 and 78,386.46

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Solution

The fourth proportional to 190,735.32, 286,090.26 and 78,386.46 is: 117,574.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,735.32 : 286,090.26 = 78,386.46 : x
  2. Step 2: Convert to fraction form
    190,735.32/286,090.26 = 78,386.46/x
  3. Step 3: Cross multiply
    190,735.32x = 286,090.26 × 78,386.46
  4. Step 4: Simplify right side
    190,735.32x = 22,425,602,721.88
  5. Step 5: Solve for x
    x = 22,425,602,721.88/190,735.32
  6. Step 6: Final answer
    x = 117,574.46

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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.