Home / 130,386.96-179,962.02-79,416.45

Finding the Fourth Proportional to 130,386.96, 179,962.02 and 79,416.45

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Solution

The fourth proportional to 130,386.96, 179,962.02 and 79,416.45 is: 109,611.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,386.96 : 179,962.02 = 79,416.45 : x
  2. Step 2: Convert to fraction form
    130,386.96/179,962.02 = 79,416.45/x
  3. Step 3: Cross multiply
    130,386.96x = 179,962.02 × 79,416.45
  4. Step 4: Simplify right side
    130,386.96x = 14,291,944,763.23
  5. Step 5: Solve for x
    x = 14,291,944,763.23/130,386.96
  6. Step 6: Final answer
    x = 109,611.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.