Home / 145,420.18-200,597.89-87,261.87

Finding the Fourth Proportional to 145,420.18, 200,597.89 and 87,261.87

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Solution

The fourth proportional to 145,420.18, 200,597.89 and 87,261.87 is: 120,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,420.18 : 200,597.89 = 87,261.87 : x
  2. Step 2: Convert to fraction form
    145,420.18/200,597.89 = 87,261.87/x
  3. Step 3: Cross multiply
    145,420.18x = 200,597.89 × 87,261.87
  4. Step 4: Simplify right side
    145,420.18x = 17,504,547,854.83
  5. Step 5: Solve for x
    x = 17,504,547,854.83/145,420.18
  6. Step 6: Final answer
    x = 120,372.20

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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.