Home / 85,888.04-128,836.10-70,867.29

Finding the Fourth Proportional to 85,888.04, 128,836.10 and 70,867.29

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Solution

The fourth proportional to 85,888.04, 128,836.10 and 70,867.29 is: 106,304.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,888.04 : 128,836.10 = 70,867.29 : x
  2. Step 2: Convert to fraction form
    85,888.04/128,836.10 = 70,867.29/x
  3. Step 3: Cross multiply
    85,888.04x = 128,836.10 × 70,867.29
  4. Step 4: Simplify right side
    85,888.04x = 9,130,264,906.83
  5. Step 5: Solve for x
    x = 9,130,264,906.83/85,888.04
  6. Step 6: Final answer
    x = 106,304.27

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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.