Home / 143,434.40-215,151.60-90,903.20

Finding the Fourth Proportional to 143,434.40, 215,151.60 and 90,903.20

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Solution

The fourth proportional to 143,434.40, 215,151.60 and 90,903.20 is: 136,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,434.40 : 215,151.60 = 90,903.20 : x
  2. Step 2: Convert to fraction form
    143,434.40/215,151.60 = 90,903.20/x
  3. Step 3: Cross multiply
    143,434.40x = 215,151.60 × 90,903.20
  4. Step 4: Simplify right side
    143,434.40x = 19,557,968,925.12
  5. Step 5: Solve for x
    x = 19,557,968,925.12/143,434.40
  6. Step 6: Final answer
    x = 136,354.80

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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.