Home / 190,970.40-286,461.24-91,141.20

Finding the Fourth Proportional to 190,970.40, 286,461.24 and 91,141.20

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Solution

The fourth proportional to 190,970.40, 286,461.24 and 91,141.20 is: 136,714.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,970.40 : 286,461.24 = 91,141.20 : x
  2. Step 2: Convert to fraction form
    190,970.40/286,461.24 = 91,141.20/x
  3. Step 3: Cross multiply
    190,970.40x = 286,461.24 × 91,141.20
  4. Step 4: Simplify right side
    190,970.40x = 26,108,421,167.09
  5. Step 5: Solve for x
    x = 26,108,421,167.09/190,970.40
  6. Step 6: Final answer
    x = 136,714.49

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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.