Home / 86,947.40-130,421.10-83,448.20

Finding the Fourth Proportional to 86,947.40, 130,421.10 and 83,448.20

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Solution

The fourth proportional to 86,947.40, 130,421.10 and 83,448.20 is: 125,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,947.40 : 130,421.10 = 83,448.20 : x
  2. Step 2: Convert to fraction form
    86,947.40/130,421.10 = 83,448.20/x
  3. Step 3: Cross multiply
    86,947.40x = 130,421.10 × 83,448.20
  4. Step 4: Simplify right side
    86,947.40x = 10,883,406,037.02
  5. Step 5: Solve for x
    x = 10,883,406,037.02/86,947.40
  6. Step 6: Final answer
    x = 125,172.30

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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.