Home / 130,637.79-195,624.32-86,129.51

Finding the Fourth Proportional to 130,637.79, 195,624.32 and 86,129.51

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Solution

The fourth proportional to 130,637.79, 195,624.32 and 86,129.51 is: 128,975.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,637.79 : 195,624.32 = 86,129.51 : x
  2. Step 2: Convert to fraction form
    130,637.79/195,624.32 = 86,129.51/x
  3. Step 3: Cross multiply
    130,637.79x = 195,624.32 × 86,129.51
  4. Step 4: Simplify right side
    130,637.79x = 16,849,025,416.91
  5. Step 5: Solve for x
    x = 16,849,025,416.91/130,637.79
  6. Step 6: Final answer
    x = 128,975.13

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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.