Home / 88,191.16-121,637.12-61,320.20

Finding the Fourth Proportional to 88,191.16, 121,637.12 and 61,320.20

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Solution

The fourth proportional to 88,191.16, 121,637.12 and 61,320.20 is: 84,575.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,191.16 : 121,637.12 = 61,320.20 : x
  2. Step 2: Convert to fraction form
    88,191.16/121,637.12 = 61,320.20/x
  3. Step 3: Cross multiply
    88,191.16x = 121,637.12 × 61,320.20
  4. Step 4: Simplify right side
    88,191.16x = 7,458,812,525.82
  5. Step 5: Solve for x
    x = 7,458,812,525.82/88,191.16
  6. Step 6: Final answer
    x = 84,575.51

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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.