Home / 112,688.16-155,509.20-61,701.12

Finding the Fourth Proportional to 112,688.16, 155,509.20 and 61,701.12

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Solution

The fourth proportional to 112,688.16, 155,509.20 and 61,701.12 is: 85,147.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.16 : 155,509.20 = 61,701.12 : x
  2. Step 2: Convert to fraction form
    112,688.16/155,509.20 = 61,701.12/x
  3. Step 3: Cross multiply
    112,688.16x = 155,509.20 × 61,701.12
  4. Step 4: Simplify right side
    112,688.16x = 9,595,091,810.30
  5. Step 5: Solve for x
    x = 9,595,091,810.30/112,688.16
  6. Step 6: Final answer
    x = 85,147.29

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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.