Home / 112,688.40-169,032.60-102,320.40

Finding the Fourth Proportional to 112,688.40, 169,032.60 and 102,320.40

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Solution

The fourth proportional to 112,688.40, 169,032.60 and 102,320.40 is: 153,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.40 : 169,032.60 = 102,320.40 : x
  2. Step 2: Convert to fraction form
    112,688.40/169,032.60 = 102,320.40/x
  3. Step 3: Cross multiply
    112,688.40x = 169,032.60 × 102,320.40
  4. Step 4: Simplify right side
    112,688.40x = 17,295,483,245.04
  5. Step 5: Solve for x
    x = 17,295,483,245.04/112,688.40
  6. Step 6: Final answer
    x = 153,480.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.