Home / 112,421.64-155,214.20-72,152.76

Finding the Fourth Proportional to 112,421.64, 155,214.20 and 72,152.76

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Solution

The fourth proportional to 112,421.64, 155,214.20 and 72,152.76 is: 99,617.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,421.64 : 155,214.20 = 72,152.76 : x
  2. Step 2: Convert to fraction form
    112,421.64/155,214.20 = 72,152.76/x
  3. Step 3: Cross multiply
    112,421.64x = 155,214.20 × 72,152.76
  4. Step 4: Simplify right side
    112,421.64x = 11,199,132,921.19
  5. Step 5: Solve for x
    x = 11,199,132,921.19/112,421.64
  6. Step 6: Final answer
    x = 99,617.23

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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.