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Finding the Fourth Proportional to 130,036.88, 179,450.90 and 70,420.88

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Solution

The fourth proportional to 130,036.88, 179,450.90 and 70,420.88 is: 97,180.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,036.88 : 179,450.90 = 70,420.88 : x
  2. Step 2: Convert to fraction form
    130,036.88/179,450.90 = 70,420.88/x
  3. Step 3: Cross multiply
    130,036.88x = 179,450.90 × 70,420.88
  4. Step 4: Simplify right side
    130,036.88x = 12,637,089,045.43
  5. Step 5: Solve for x
    x = 12,637,089,045.43/130,036.88
  6. Step 6: Final answer
    x = 97,180.81

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1.5x scale

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.