Home / 208,022.76-287,070.20-112,527.40

Finding the Fourth Proportional to 208,022.76, 287,070.20 and 112,527.40

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Solution

The fourth proportional to 208,022.76, 287,070.20 and 112,527.40 is: 155,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,022.76 : 287,070.20 = 112,527.40 : x
  2. Step 2: Convert to fraction form
    208,022.76/287,070.20 = 112,527.40/x
  3. Step 3: Cross multiply
    208,022.76x = 287,070.20 × 112,527.40
  4. Step 4: Simplify right side
    208,022.76x = 32,303,263,223.48
  5. Step 5: Solve for x
    x = 32,303,263,223.48/208,022.76
  6. Step 6: Final answer
    x = 155,287.16

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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.