Home / 112,306.09-154,980.12-64,559.02

Finding the Fourth Proportional to 112,306.09, 154,980.12 and 64,559.02

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Solution

The fourth proportional to 112,306.09, 154,980.12 and 64,559.02 is: 89,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,306.09 : 154,980.12 = 64,559.02 : x
  2. Step 2: Convert to fraction form
    112,306.09/154,980.12 = 64,559.02/x
  3. Step 3: Cross multiply
    112,306.09x = 154,980.12 × 64,559.02
  4. Step 4: Simplify right side
    112,306.09x = 10,005,364,666.68
  5. Step 5: Solve for x
    x = 10,005,364,666.68/112,306.09
  6. Step 6: Final answer
    x = 89,090.13

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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.