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Finding the Fourth Proportional to 180,703.50, 249,374.43 and 105,256.86

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Solution

The fourth proportional to 180,703.50, 249,374.43 and 105,256.86 is: 145,256.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,703.50 : 249,374.43 = 105,256.86 : x
  2. Step 2: Convert to fraction form
    180,703.50/249,374.43 = 105,256.86/x
  3. Step 3: Cross multiply
    180,703.50x = 249,374.43 × 105,256.86
  4. Step 4: Simplify right side
    180,703.50x = 26,248,369,466.09
  5. Step 5: Solve for x
    x = 26,248,369,466.09/180,703.50
  6. Step 6: Final answer
    x = 145,256.56

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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.