Home / 142,864.40-197,167.56-86,272.40

Finding the Fourth Proportional to 142,864.40, 197,167.56 and 86,272.40

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Solution

The fourth proportional to 142,864.40, 197,167.56 and 86,272.40 is: 119,064.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,864.40 : 197,167.56 = 86,272.40 : x
  2. Step 2: Convert to fraction form
    142,864.40/197,167.56 = 86,272.40/x
  3. Step 3: Cross multiply
    142,864.40x = 197,167.56 × 86,272.40
  4. Step 4: Simplify right side
    142,864.40x = 17,010,118,603.34
  5. Step 5: Solve for x
    x = 17,010,118,603.34/142,864.40
  6. Step 6: Final answer
    x = 119,064.78

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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.