Home / 86,667.10-130,000.65-72,670.30

Finding the Fourth Proportional to 86,667.10, 130,000.65 and 72,670.30

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Solution

The fourth proportional to 86,667.10, 130,000.65 and 72,670.30 is: 109,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667.10 : 130,000.65 = 72,670.30 : x
  2. Step 2: Convert to fraction form
    86,667.10/130,000.65 = 72,670.30/x
  3. Step 3: Cross multiply
    86,667.10x = 130,000.65 × 72,670.30
  4. Step 4: Simplify right side
    86,667.10x = 9,447,186,235.70
  5. Step 5: Solve for x
    x = 9,447,186,235.70/86,667.10
  6. Step 6: Final answer
    x = 109,005.45

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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.