Home / 142,988.80-197,242.56-89,180.40

Finding the Fourth Proportional to 142,988.80, 197,242.56 and 89,180.40

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Solution

The fourth proportional to 142,988.80, 197,242.56 and 89,180.40 is: 123,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,988.80 : 197,242.56 = 89,180.40 : x
  2. Step 2: Convert to fraction form
    142,988.80/197,242.56 = 89,180.40/x
  3. Step 3: Cross multiply
    142,988.80x = 197,242.56 × 89,180.40
  4. Step 4: Simplify right side
    142,988.80x = 17,590,170,397.82
  5. Step 5: Solve for x
    x = 17,590,170,397.82/142,988.80
  6. Step 6: Final answer
    x = 123,017.82

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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.