Home / 97,421.20-145,840.20-86,923.60

Finding the Fourth Proportional to 97,421.20, 145,840.20 and 86,923.60

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Solution

The fourth proportional to 97,421.20, 145,840.20 and 86,923.60 is: 130,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,421.20 : 145,840.20 = 86,923.60 : x
  2. Step 2: Convert to fraction form
    97,421.20/145,840.20 = 86,923.60/x
  3. Step 3: Cross multiply
    97,421.20x = 145,840.20 × 86,923.60
  4. Step 4: Simplify right side
    97,421.20x = 12,676,955,208.72
  5. Step 5: Solve for x
    x = 12,676,955,208.72/97,421.20
  6. Step 6: Final answer
    x = 130,125.22

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1.5x scale

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.