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Finding the Fourth Proportional to 180,612.90, 249,252.74 and 100,038.71

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Solution

The fourth proportional to 180,612.90, 249,252.74 and 100,038.71 is: 138,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,612.90 : 249,252.74 = 100,038.71 : x
  2. Step 2: Convert to fraction form
    180,612.90/249,252.74 = 100,038.71/x
  3. Step 3: Cross multiply
    180,612.90x = 249,252.74 × 100,038.71
  4. Step 4: Simplify right side
    180,612.90x = 24,934,920,827.11
  5. Step 5: Solve for x
    x = 24,934,920,827.11/180,612.90
  6. Step 6: Final answer
    x = 138,057.25

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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.