Home / 145,911.02-201,374.40-81,390.42

Finding the Fourth Proportional to 145,911.02, 201,374.40 and 81,390.42

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Solution

The fourth proportional to 145,911.02, 201,374.40 and 81,390.42 is: 112,328.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,911.02 : 201,374.40 = 81,390.42 : x
  2. Step 2: Convert to fraction form
    145,911.02/201,374.40 = 81,390.42/x
  3. Step 3: Cross multiply
    145,911.02x = 201,374.40 × 81,390.42
  4. Step 4: Simplify right side
    145,911.02x = 16,389,947,298.46
  5. Step 5: Solve for x
    x = 16,389,947,298.46/145,911.02
  6. Step 6: Final answer
    x = 112,328.37

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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.