Home / 97,429.20-145,852.20-86,931.60

Finding the Fourth Proportional to 97,429.20, 145,852.20 and 86,931.60

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Solution

The fourth proportional to 97,429.20, 145,852.20 and 86,931.60 is: 130,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,429.20 : 145,852.20 = 86,931.60 : x
  2. Step 2: Convert to fraction form
    97,429.20/145,852.20 = 86,931.60/x
  3. Step 3: Cross multiply
    97,429.20x = 145,852.20 × 86,931.60
  4. Step 4: Simplify right side
    97,429.20x = 12,679,165,109.52
  5. Step 5: Solve for x
    x = 12,679,165,109.52/97,429.20
  6. Step 6: Final answer
    x = 130,137.22

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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.