Home / 86,148.09-129,222.02-26,988.36

Finding the Fourth Proportional to 86,148.09, 129,222.02 and 26,988.36

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Solution

The fourth proportional to 86,148.09, 129,222.02 and 26,988.36 is: 40,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,148.09 : 129,222.02 = 26,988.36 : x
  2. Step 2: Convert to fraction form
    86,148.09/129,222.02 = 26,988.36/x
  3. Step 3: Cross multiply
    86,148.09x = 129,222.02 × 26,988.36
  4. Step 4: Simplify right side
    86,148.09x = 3,487,490,260.75
  5. Step 5: Solve for x
    x = 3,487,490,260.75/86,148.09
  6. Step 6: Final answer
    x = 40,482.50

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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.