Home / 130,637.04-195,623.19-86,128.76

Finding the Fourth Proportional to 130,637.04, 195,623.19 and 86,128.76

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Solution

The fourth proportional to 130,637.04, 195,623.19 and 86,128.76 is: 128,974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,637.04 : 195,623.19 = 86,128.76 : x
  2. Step 2: Convert to fraction form
    130,637.04/195,623.19 = 86,128.76/x
  3. Step 3: Cross multiply
    130,637.04x = 195,623.19 × 86,128.76
  4. Step 4: Simplify right side
    130,637.04x = 16,848,781,803.83
  5. Step 5: Solve for x
    x = 16,848,781,803.83/130,637.04
  6. Step 6: Final answer
    x = 128,974.00

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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.